generate response: Okay, I need that. Didn't they give you a reference number when you booked it?. Intent: book_train. Slots: train-arriveby=11:45, train-bookpeople=5, train-day=wednesday, train-departure=ely, train-destination=cambridge
Response: I apologize for that. The booking number is OWXJ46II and the cost will be 22 GBP.