generate response: I need it to arrive by 6:30 and I need it for 3 people.. Intent: book_train. Slots: train-arriveby=6:30, 06:30, train-bookpeople=3, train-day=saturday, train-departure=london liverpool street, train-destination=cambridge
Response: Ok. TR7909 leaving at 23:39 and arriving at 01:07 is booked for 3 people. Reference 00PENVQG . 39.83 payable at the station