generate response: Yes, please. I need a booking for 4 people and I want the reference number. Thanks for being so helpful!. Intent: book_train. Slots: train-bookpeople=4, train-day=monday, train-departure=cambridge, train-destination=birmingham new street, train-leaveat=16:30
Response: I have booked you 4 tickets on TR7728. Your reference number is 3USY2KMX . I hope you have a great trip and can I assist you with anything else?