generate response: Yes, for 7 people please. I need the reference number.. Intent: book_train. Slots: train-bookpeople=7, train-day=tuesday, train-departure=cambridge, train-destination=peterborough, train-leaveat=21:30
Response: Booking was successful, the total fee is 115.5 GBP payable at the station. Reference number is : NBX6ZT2O .