input: Write a function to create a customer support chatbot for a restaurant that reads a user's question from a file named 'random_user_question.txt' and provides a random response from a predefined list of possible answers. The function should return the chosen response as a string.
  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)
      
      return response
  
  assert restaurant_chatbot()=="We serve a variety of dishes - from salads to pizzas to steaks!" or \
   "Check out our menu for a full list of options" or \
   "We serve a variety of dishes, including traditional Italian, Mexican, and American fare. What would you like to try?" or \
   "We have a great selection of meals! What kind of dish are you looking for?" or \
   "We have a unique selection of meals - have you checked out our menu?"
  assert restaurant_chatbot()=="We serve a variety of dishes - from salads to pizzas to steaks!" or \
   "Check out our menu for a full list of options" or \
   "We serve a variety of dishes, including traditional Italian, Mexican, and American fare. What would you like to try?" or \
   "We have a great selection of meals! What kind of dish are you looking for?" or \
   "We have a unique selection of meals - have you checked out our menu?"
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)
      
      return response