generate response: Yes, that would be great. Can you book tickets for 7 people please. And I'll need a reference number for it.. Intent: book_train. Slots: train-bookpeople=7, train-day=thursday, train-departure=cambridge, train-destination=ely, train-leaveat=12:00
Response: Booked! Your reference number is UCT2SJ8W . Fee is 30.8, paid at the station. Anything else.