generate response: Yes, I need tickets for 5 people.. Intent: book_train. Slots: train-bookpeople=5, train-day=saturday, train-departure=ely, train-destination=cambridge, train-leaveat=18:45
Response: You are booked for 5 tickets leaving Ely on Saturday at 19:35 and arriving in Cambridge at 19:52. Your reference number is Q245NAJF and the total fee is 17.6 Pounds payable at the station.