diff --git a/main.py b/main.py
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+++ b/main.py
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+import openai
+from langchain.embeddings import HuggingFaceEmbeddings
+import uuid
+from langchain.vectorstores import Chroma
+from chromadb.config import Settings
+import json
+import os
+
+FUNCTIONS_MODEL = os.environ.get("FUNCTIONS_MODEL", "functions")
+LLM_MODEL = os.environ.get("LLM_MODEL", "gpt-4")
+
+embeddings = HuggingFaceEmbeddings(model_name="all-MiniLM-L6-v2")
+
+chroma_client = Chroma(collection_name="memories", persist_directory="db", embedding_function=embeddings)
+
+def needs_to_do_action(user_input):
+    messages = [
+         #   {"role": "system", "content": "You are a helpful assistant."},
+            {"role": "user",
+             "content": f"""Transcript of AI assistant responding to user requests. Replies with the action to perform, including reasoning, and the confidence interval from 0 to 100.
+
+Request: {user_input}
+Function call: """
+             }
+        ]
+    functions = [
+        {
+        "name": "intent",
+        "description": """Decide to do an action.""",
+        "parameters": {
+            "type": "object",
+            "properties": {
+            "confidence": {
+                "type": "number",
+                "description": "confidence of the action"
+            },
+            "action": {
+                "type": "string",
+                "enum": ["save_memory", "search_memory", "reply"],
+                "description": "user intent"
+            },
+            "reasoning": {
+                "type": "string",
+                "description": "reasoning behind the intent"
+            },
+            },
+            "required": ["action"]
+        }
+        },    
+    ]
+    response = openai.ChatCompletion.create(
+        #model="gpt-3.5-turbo",
+        model=FUNCTIONS_MODEL,
+        messages=messages,
+        functions=functions,
+        max_tokens=200,
+        stop=None,
+        temperature=0.5,
+        #function_call="auto"
+        function_call={"name": "intent"},
+    )
+    response_message = response["choices"][0]["message"]
+    if response_message.get("function_call"):
+        function_name = response.choices[0].message["function_call"].name
+        function_parameters = response.choices[0].message["function_call"].arguments
+        # read the json from the string
+        res = json.loads(function_parameters)
+        print(">>> function name: "+function_name)
+        print(">>> function parameters: "+function_parameters)
+        return res["action"]
+    return "reply"
+
+### Agent capabilities
+def save(memory):
+    print(">>> saving to memories: ") 
+    print(memory)
+    chroma_client.add_texts([memory],[{"id": str(uuid.uuid4())}])
+    chroma_client.persist()
+    return "saved to memory"
+
+def search(query):
+    res = chroma_client.similarity_search(query)
+    print(">>> query: ") 
+    print(query)
+    print(">>> retrieved memories: ") 
+    print(res)
+    return res
+
+def process_functions(user_input, action=""):
+    messages = [
+         #   {"role": "system", "content": "You are a helpful assistant."},
+            {"role": "user",
+             "content": f"""Transcript of AI assistant responding to user requests.
+
+Request: {user_input}
+Function call: """
+             }
+        ]
+    response = get_completion(messages, action=action)
+    response_message = response["choices"][0]["message"]
+    response_result = ""
+    if response_message.get("function_call"):
+        function_name = response.choices[0].message["function_call"].name
+        function_parameters = response.choices[0].message["function_call"].arguments
+        function_result = ""
+
+
+        available_functions = {
+            "save_memory": save,
+            "search_memory": search,
+        }
+
+        function_to_call = available_functions[function_name]
+        function_result = function_to_call(function_parameters)
+        messages = [
+         #   {"role": "system", "content": "You are a helpful assistant."},
+            {
+             "role": "user",
+             "content": user_input,
+             }
+        ]
+        messages.append(
+            {
+                "role": "assistant",
+                "content": None,
+                "function_call": {"name": function_name, "arguments": function_parameters,},
+            }
+        )
+        messages.append(
+            {
+                "role": "function",
+                "name": function_name,
+                "content": f'{{"result": {str(function_result)}}}'
+            }
+        )
+        response = openai.ChatCompletion.create(
+            model=LLM_MODEL,
+            messages=messages,
+            max_tokens=200,
+            stop=None,
+            temperature=0.5,
+        )
+        messages.append(
+            {
+                "role": "assistant",
+                "content": response.choices[0].message["content"],
+            }
+        )
+    return messages
+
+def get_completion(messages, action=""):
+    function_call = "auto"
+    if action != "":
+        function_call={"name": action}
+    print("==> function_call: ")
+    print(function_call)
+    functions = [
+        {
+        "name": "save_memory",
+        "description": """Save or store informations into memory.""",
+        "parameters": {
+            "type": "object",
+            "properties": {
+            "string": {
+                "type": "string",
+                "description": "information to save"
+            },
+            },
+            "required": ["string"]
+        }
+        },
+        {
+        "name": "search_memory",
+        "description": """Search in memory""",
+        "parameters": {
+            "type": "object",
+            "properties": {
+            "query": {
+                "type": "string",
+                "description": "The query to be used to search informations"
+            },
+            },
+            "required": ["query"]
+        }
+        },    
+    ]
+    response = openai.ChatCompletion.create(
+        #model="gpt-3.5-turbo",
+        model=FUNCTIONS_MODEL,
+        messages=messages,
+        functions=functions,
+        max_tokens=200,
+        stop=None,
+        temperature=0.1,
+        function_call=function_call
+    )
+
+    return response
+
+conversation_history = []
+while True:
+    user_input = input("> ")
+    action = needs_to_do_action(user_input) 
+    if action != "reply":
+        print("==> needs to do action: "+action)
+        responses = process_functions(user_input, action=action)
+        # add responses to conversation history by extending the list
+        conversation_history.extend(responses)
+        # print the latest response from the conversation history
+        print(conversation_history[-1])
+    else:
+        print("==> no action needed")
+        # construct the message and add it to the conversation history
+        message = {"role": "user", "content": user_input}
+        conversation_history.append(message)
+        #conversation_history.append({ "role": "assistant", "content": "No action needed from my side."})
+
+        # get the response from the model
+        response = openai.ChatCompletion.create(
+            model=LLM_MODEL,
+            messages=conversation_history,
+            max_tokens=200,
+            stop=None,
+            temperature=0.5,
+        )
+        # add the response to the conversation history by extending the list
+        conversation_history.append({ "role": "assistant", "content": response.choices[0].message["content"]})
+        # print the latest response from the conversation history
+        print(conversation_history[-1])
+       
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