input: def create_virtual_assistant(project_id: str, session_id: str):
      """ This function sets up a virtual assistant using Dialogflow and Python to answer a basic set of questions.
      It continuously prompts the user for input, sends the input to Dialogflow, and prints the assistant's response.
      Example:
      for create_virtual_assistant('project-id', 'session-id'):
          User: Hello
          Assistant: Hi there! How can I assist you today?
      """
output:     from google.cloud import 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: ")
          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}")