generate response: Could you book me a table at Varisty for 4 people on Sunday at 13:00. I need a reference number. Intent: book_restaurant. Slots: restaurant-area=centre, restaurant-bookday=sunday, restaurant-bookpeople=4, restaurant-booktime=13:00, restaurant-food=international, restaurant-name=the varsity restaurant, restaurant-pricerange=moderate
Response: Booking was successful. The table will be reserved for 15 minutes. Reference number is : Y0Y0TNBU .