generate response: arrive by 21:15 for the same group of people. and I need a reference number. Intent: book_train. Slots: train-arriveby=21:15, train-bookpeople=5, train-day=tuesday, train-departure=cambridge, train-destination=ely, train-leaveat=dontcare
Response: I have booked you on the train leaving Cambridge at 19:50. Your will arrive at 20:07 and your reference number is 7776W8DF .