generate response: Great can I book that for 8 people and get a reference number please?. Intent: book_train. Slots: train-bookpeople=8, train-day=wednesday, train-departure=cambridge, train-destination=ely, train-leaveat=15:30
Response: You are booked for 8 seats on TR6745 leaving Cambridge Wednesday at 17:50. Reference # is OCWICAXZ and you can pay at the station. 4.40 pounds each.