generate response: Yes please. Can you book it for Saturday at 19:45 for 2 and get me a reference number?. Intent: book_train. Slots: restaurant-area=centre, restaurant-bookday=saturday, restaurant-bookpeople=2, restaurant-booktime=19:45, restaurant-food=italian, train-bookpeople=2, train-day=saturday, train-departure=broxbourne, train-destination=cambridge, train-leaveat=15:15
Response: I'm sorry, they didn't have that time available. Would you like to try a different time or a different day?