input: Write a function that implements a chatbot in Python to provide customer support in a restaurant, which reads a random user question from a file named 'random_user_question.txt' and responds with a random message from a predefined list of possible responses. 
  
  def restaurant_chatbot():
      possible_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?'
      ]
  
      with open('random_user_question.txt') as user_question:
          question = user_question.read()
  
      response = random.choice(possible_responses)
  
      print(response)
  
  # Test case:
  # The file 'random_user_question.txt' contains "What meals do you serve?"
  # Expected output is one of the responses from the possible_responses list.
output: import random
  
  def restaurant_chatbot():
      possible_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?'
      ]
  
      with open('random_user_question.txt') as user_question:
          question = user_question.read()
  
      response = random.choice(possible_responses)
  
      print(response)