generate response: 8 tickets please, and I will need the reference number.. Intent: book_train. Slots: train-arriveby=18:45, train-bookpeople=8, train-day=sunday, train-departure=cambridge, train-destination=stevenage
Response: Your booking was successful. The total fee is 81.92 GBP which can be paid at the station. The reference number is 1A9JYQS7 .