generate response: Is there anything available for 15:15?. Intent: book_restaurant. Slots: restaurant-area=centre, restaurant-bookday=sunday, restaurant-bookpeople=6, restaurant-booktime=15:15, restaurant-food=italian, restaurant-name=zizzi cambridge, restaurant-pricerange=cheap
Response: I've booked you at 15:15 on Sunday at Zizzi Cambridge. Anything else?