generate response: Yes, please. I need a booking for 2 people. Will you send me the reference number?. Intent: book_train. Slots: train-arriveby=17:30, train-bookpeople=2, train-day=tuesday, train-departure=cambridge, train-destination=london liverpool street
Response: I successful booked your train the total fee is 33.2 GBP payable at the station and the reference number is : VJVYH5LC . May I further assist you.