input: from typing import Tuple
  
  def run_virtual_assistant() -> Tuple[str, str]:
      """Create a basic virtual assistant using Python and Dialogflow to answer a set of questions.
      The assistant continually prompts for user input and responds using Dialogflow.
      >>> run_virtual_assistant()
      ('User: What is the weather today?', 'Assistant: The weather today is sunny with a high of 75°F.')
      >>> run_virtual_assistant()
      ('User: Who won the last World Series?', 'Assistant: The Los Angeles Dodgers won the 2020 World Series.')
      """
      import dialogflow_v2 as dialogflow
      import requests
  
      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:     if text.lower() == 'exit':
          break
      return (text, response.query_result.fulfillment_text)