input: from typing import List
  
  def restaurant_chatbot(possible_responses: List[str], filename: str) -> str:
      """
      This function reads a user question from a file and responds with a random response from a list of possible responses.
      
      >>> restaurant_chatbot(['We serve a variety of dishes - from salads to pizzas to steaks!'], 'random_user_question.txt')
      'We serve a variety of dishes - from salads to pizzas to steaks!'
      """
      
      # read the user's question
      with open(filename) as user_question:
          question = user_question.read()
  
      # choose a random response
      response = random.choice(possible_responses)
  
      # return the response to the user
      return response
output:     import random