generate response: I need 8 tickets.. Intent: book_train. Slots: train-bookpeople=8, train-day=saturday, train-departure=london kings cross, train-destination=cambridge, train-leaveat=12:15, after 12:00.
Response: Your booking was successful. The total fee is 151.04 GBP and the booking number is X1NEC9S5 . Thank you again.