generate response: There are 7 people in my party and we'd like to leave after 16:15 on Tuesday. I'll need a reference number, please.. Intent: book_train. Slots: train-bookpeople=7, train-day=tuesday, train-departure=cambridge, train-destination=norwich, train-leaveat=16:15
Response: Alright, the booking was successful, the total fee is 123.2 GBP payable at the station . Reference number is: KFMNIOGF .