generate response: The 9:50 train will be fine. I'll need to book for 6 people. Can I please have the reference number?. Intent: book_train. Slots: train-bookpeople=6, train-day=wednesday, train-departure=cambridge, train-destination=ely, train-leaveat=9:50
Response: Your tickets have been booked. Your total is 26.4 GBP and will be payable at the station. Your confirmation is 04Q2G0GU .