input: Write a function that reads a user's question from a file named 'random_user_question.txt', and returns a random response from a list of possible responses related to the restaurant's meals. The function should print the chosen response to the user. The function header should be `def restaurant_chatbot():`.
  
  assert restaurant_chatbot()=="We serve a variety of dishes - from salads to pizzas to steaks!"
  assert restaurant_chatbot()=="Check out our menu for a full list of options"
  assert restaurant_chatbot()=="We serve a variety of dishes, including traditional Italian, Mexican, and American fare. What would you like to try?"
  assert restaurant_chatbot()=="We have a great selection of meals! What kind of dish are you looking for?"
  assert restaurant_chatbot()=="We have a unique selection of meals - have you checked out our menu?"
output: def restaurant_chatbot():
      import random
      responses = [
          "We serve a variety of dishes - from salads to pizzas to steaks!",
          "Check out our menu for a full list of options",
          "We serve a variety of dishes, including traditional Italian, Mexican, and American fare. What would you like to try?",
          "We have a great selection of meals! What kind of dish are you looking for?",
          "We have a unique selection of meals - have you checked out our menu?"
      ]
      response = random.choice(responses)
      print(response)
      return response