generate response: Yes please. I need to book it for 3 people. Once booked can I please have the reference number?. Intent: book_train. Slots: train-bookpeople=3, train-day=saturday, train-departure=cambridge, train-destination=stansted airport, train-leaveat=12:30
Response: Alright got your tickets booked, the total fee is 24.24 GBP payable at the station. Your reference number is: O14QEE79 . Anything else I can help with?