generate response: That's perfect, could you book it for 4 people?. Intent: book_train. Slots: train-arriveby=16:30, train-bookpeople=4, train-day=thursday, train-departure=birmingham new street, train-destination=cambridge
Response: Yes. I've got you booked for 4 tickets, reference number 65LWDB9Q . The fee will be 300.39, payable at the station. Can I help you with anything else?