input: 
  def create_assistant(project_id: str, session_id: str) -> None:
      """Create a virtual assistant that uses Dialogflow to respond to user queries. 
      It prompts the user for input and returns the assistant's response.
      
      >>> create_assistant('project-id', 'session-id')
      User: Hello
      Assistant: Hi there! How can I help you?
      >>> create_assistant('project-id', 'session-id')
      User: What is the weather today?
      Assistant: I'm sorry, I don't have access to real-time data. Try checking a weather website.
      """
      import dialogflow_v2 as dialogflow
      import requests
  
      session_client = dialogflow.SessionsClient()
      session = session_client.session_path(project_id, session_id)
  
      while True:
          text = input('User: ')
          text_input = dialogflow.types.TextInput(text=text, language_code='en-US')
          query_input = dialogflow.types.QueryInput(text=text_input)
          response = session_client.detect_intent(session=session, query_input=query_input)
  
          print('Assistant:', response.query_result.fulfillment_text)
  
output:     if response.query_result.intent.is_fallback:
          print('Assistant: I\'m sorry, I don\'t have access to real-time data. Try checking a weather website.')
      else:
          print('Assistant:', response.query_result.fulfillment_text)