Active Learn Chat Bot

import random
import os
import json
import time

def greeting():
    responses = ["Halo! Ada yang bisa saya bantu?", "Hai, apa kabar?", "Selamat datang!","v*_*v"]
    return random.choice(responses)

def farewell():
    responses = ["Sampai jumpa lagi!", "Selamat tinggal. Semoga harimu menyenangkan.", "Hati-hati.","v0_0v"]
    return random.choice(responses)

def extract_entities(user_input):
    user_input_lower = user_input.lower()
    entities = []
    if "nama" in user_input_lower:
        entities.append("nama")
 # tambahkan entitas lain jika diperlukan
    return entities

def respond(user_input, knowledge):
    if "kamu siapa" in user_input.lower():
        return "Saya Chatbot, senang bisa chating sama kamu!"
    elif "apa kabar" in user_input.lower():
        return "Saya ini cuma program, tapi makasih udah nanya. kalau kamu gimana?"
    elif "keluar" in user_input.lower():
        return farewell()
    elif "jawaban" in user_input.lower():
        return add_knowledge(user_input, knowledge)
    else:
        return knowledge.get(user_input, "Saya enggak gitu ngerti nih. Bisa kamu jelasin lebih lanjut?")

def add_knowledge(user_input, knowledge):
    new_knowledge = input("Saya harus jawab apa ya pertanyaan ini?")
    question = user_input.replace("jawaban", "").strip()

    knowledge[question] = new_knowledge
    save_knowledge(knowledge)

    return "ok, nanti akan saya jawab seperti itu... q*_*p"

def save_knowledge(knowledge):
    with open("knowledge.json", "w") as file:
        json.dump(knowledge, file)

def load_knowledge():
    if os.path.exists("knowledge.json"):
        with open("knowledge.json", "r") as file:
            return json.load(file)
    else:
        return {}

def manage_conversation(user_input, knowledge):
    # Extract entities from user input
    entities = extract_entities(user_input)

    # Check knowledge for answers to questions
    for entity in entities:
        if entity in knowledge:
            return knowledge[entity]

    # If no answers are found, ask user for more information
    return "enggak jelas maksudnya apa sih? q?_?p"

def main():
    knowledge = load_knowledge()
    print(greeting())
    last_input = time.time()

    while True:
        user_input = input("d^_^b  ")
        if user_input.lower() == "keluar":
            print(farewell())
            break
        else:
            response = respond(user_input, knowledge)
            print("q^_^p", response)
            last_input = time.time()

        if time.time() - last_input > 3:
            print("kok diem? mau ngomongin apa nih?")
            last_input = time.time()

if __name__ == "__main__":
    main()