generate response: Can make a booking for 2 people and give me a reference number please?. Intent: book_train. Slots: train-bookpeople=2, train-day=friday, train-departure=stevenage, train-destination=cambridge, train-leaveat=09:30, after 09:15
Response: Your reference number for the booking is YJ63IG8A and it will cost 25.6 GBP.