generate response: Thank you. Can you tell me the reference number for the train booking please?. Intent: book_train. Slots: train-arriveby=19:15, train-bookpeople=7, train-day=wednesday, train-departure=cambridge, train-destination=peterborough
Response: Booked! The fee is 115.5 GBP payable at the station. Reference number: QG3869DQ .