generate response: That's perfect. I need to book the train for 3 people. Once it is booked, can I have the reference number?. Intent: book_train. Slots: train-bookpeople=3, train-day=tuesday, train-departure=norwich, train-destination=cambridge, train-leaveat=08:30
Response: I have it ready, you will pay at the station. Your reference number is fp0gzttn . Can I be of any further help?