generate response: That would be great. Please book tickets for 7 people. I'll also need a reference number, if possible.. Intent: book_train. Slots: train-arriveby=09:30, train-bookpeople=7, train-day=thursday, train-departure=birmingham new street, train-destination=cambridge
Response: Okay I booked it for you and your reference number is 0LYL0J3V .