generate response: It needs to leave after 14:30. I need a booking for 2 people.. Intent: book_train. Slots: train-bookpeople=2, train-day=sunday, train-departure=london kings cross, train-destination=cambridge, train-leaveat=14:30
Response: I have a train that will leave at 15:17 and arrive in cambridge at 16:08. Would you like me to book that for you?