generate response: That sounds great. Please book it for 8 on Saturday at 14:15 and get a reference number.. Intent: book_train. Slots: restaurant-area=centre, restaurant-bookday=saturday, restaurant-bookpeople=8, restaurant-booktime=14:15, restaurant-name=don pasquale pizzeria, restaurant-pricerange=expensive, train-bookpeople=8, train-day=saturday, train-departure=cambridge, train-destination=london kings cross, train-leaveat=18:45
Response: Unfortunately, the restaurant doesn't have a table for that time. Can you do it earlier or later?