generate response: I just need the reff number for the train you booked. Same group of people will be needing tickets.. Intent: book_train. Slots: train-bookpeople=6, train-day=friday, train-departure=london liverpool street, train-destination=cambridge, train-leaveat=15:30
Response: Of course. The reference number is FAE4OIMM . Can I help you with anything else today?