generate response: That is fine please make a booking for 8 people. Intent: book_train. Slots: train-bookpeople=8, train-day=saturday, train-departure=cambridge, train-destination=london liverpool street, train-leaveat=18:15
Response: OK, you have 8 tickets reserved on TR2166. The total fee is 106.24 GBP payable at the station. Reference number is : RAEGFIL7 .