input: from typing import NoReturn
  
  
  def virtual_assistant() -> NoReturn:
      """ Create a virtual assistant using Python and Dialogflow to answer a basic set of questions.
      The assistant prompts the user for input, sends the input to Dialogflow for intent detection,
      and prints the fulfillment text returned by Dialogflow. This continues until the program is terminated.
      Example:
      >>> virtual_assistant()
      User: What time is it?
      Assistant: The current time is 12:00 PM.
      """
      import dialogflow_v2 as dialogflow
  
      project_id = 'project-id'
      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:     import dialogflow_v2 as dialogflow
  
      project_id = 'project-id'
      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)