generate response: That would be perfect. Could you book it for 6 people and provide me a reference number?. Intent: book_train. Slots: train-bookpeople=6, train-day=monday, train-departure=norwich, train-destination=cambridge, train-leaveat=17:00
Response: I've booked 6 tickets, the fee is 105.6 and the reference number is 4REIIUM5 .