input: Write a function to implement a chatbot that can provide customer support in a restaurant by reading a user's question from 'random_user_question.txt' and providing a random response from a list of possible answers. The function should take no input parameters.
  
  def restaurant_customer_support():
      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)
      return response
  
  assert restaurant_customer_support().startswith("We serve a variety")
  assert restaurant_customer_support().startswith("Check out our menu")
  assert restaurant_customer_support().startswith("We serve a variety")
  assert restaurant_customer_support().startswith("We have a great selection")
  assert restaurant_customer_support().startswith("We have a unique selection")
output: def restaurant_customer_support():
      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)
      return response