generate response: Oh, it's the same group of people from the restaurant. Can I get the reference number?. Intent: book_train. Slots: train-arriveby=09:45, train-bookpeople=7, train-day=wednesday, train-departure=cambridge, train-destination=london liverpool street
Response: Booking was successful, the total fee is 116.2 GBP payable at the station . Reference number is : XZCDEB01 .