input: def virtual_assistant(project_id: str, session_id: str) -> None:
      """Creates a virtual assistant using Python and Dialogflow to answer basic questions.
      The assistant continuously prompts the user for input and responds using the specified
      Dialogflow session.
      Example:
      >>> virtual_assistant('project-id', 'session-id')
      User: What is the weather today?
      Assistant: The weather today is sunny and warm.
      """
output:     import dialogflow_v2 as dialogflow
      import os
  
      os.environ["GOOGLE_APPLICATION_CREDENTIALS"] = "path/to/your/service-account-file.json"
  
      session_client = dialogflow.SessionsClient()
      session = session_client.session_path(project_id, session_id)
  
      while True:
          user_input = input("User: ")
          if user_input.lower() in ["exit", "quit"]:
              break
  
          text_input = dialogflow.types.TextInput(text=user_input, language_code="en-US")
          query_input = dialogflow.types.QueryInput(text=text_input)
  
          response = session_client.detect_intent(session=session, query_input=query_input)
  
          print(f"Assistant: {response.query_result.fulfillment_text}")