input: def VirtualAssistant(prompt: str) -> str:
      """
      This function creates a virtual assistant using Python and Dialogflow to answer a basic set of questions.
      The assistant continuously prompts the user for input and responds using Dialogflow's response.
      >>> VirtualAssistant('')
      User: User: Assistant: 
      """
output:     
      import dialogflow_v2 as dialogflow
      import os
  
      def VirtualAssistant(prompt: str) -> str:
          """
          This function creates a virtual assistant using Python and Dialogflow to answer a basic set of questions.
          The assistant continuously prompts the user for input and responds using Dialogflow's response.
          >>> VirtualAssistant('')
          User: User: Assistant: 
          """
          os.environ["GOOGLE_APPLICATION_CREDENTIALS"] = "path/to/your/service-account-file.json"
          session_client = dialogflow.SessionsClient()
          session = session_client.session_path("your-project-id", "unique-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")
              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}")
  