generate response: I would like you to book my reservation for 3 people at 16:00 on a Saturday.. Intent: find_train. Slots: restaurant-area=centre, restaurant-bookday=saturday, restaurant-bookpeople=3, restaurant-booktime=16:00, restaurant-food=mediterranean, restaurant-pricerange=cheap
Response: The Gardenia isn't available at 16:00. Would you like to change the time or day?