generate response: How about a little earlier, say 12:30?. Intent: book_restaurant. Slots: restaurant-area=centre, restaurant-bookday=saturday, restaurant-bookpeople=1, restaurant-booktime=12:30, restaurant-food=chinese, restaurant-name=ugly duckling, restaurant-pricerange=expensive
Response: Booking was successful. The tabled will be reserved for 15 minutes. The reference number is: ZIEEXAYS