generate response: Could you book that for 8 people, please?. Intent: book_train. Slots: train-bookpeople=8, train-day=tuesday, train-departure=london liverpool street, train-destination=cambridge, train-leaveat=13:30
Response: Booking was successful, the total fee is 132.8 GBP payable at the station . Reference number is : LXVNUONW .