text: from chatbots import chatbots
  
  if __name__ == "__main__":
  
      username = None
      chatbotid = None
  
      messages = []
  
      while not username:
          username = input("Please enter your name.\n> ")
  
      while chatbotid not in chatbots.keys():
          chatbotid = input("Please enter the chatbot ID of your choice.\nValid choices are [" + ", ".join(chatbots.keys()) + "]:\n> ")
  
      chatbot = chatbots[chatbotid]
  
      print("\nPlease enjoy your chat with {0}! Type 'exit' or 'quit' to end the chat at any point.\n".format(chatbot.name))
  
      while True:
  
          message = input("[User]: ")
  
          if message == "exit" or message == "quit":
              print("Goodbye!")
              quit()
  
          if not message:
              continue
  
          messages.append(message)
          messages = messages[-5:]
  
          response = chatbot.handle_messages(messages)
  
          print("[" + chatbot.name + "]: " + response)
  