generate response: I would like to go from Ely to Cambridge and arrive by 8:00.. Intent: find_train. Slots: train-arriveby=08:00, 8:00, train-day=sunday, train-departure=ely, train-destination=cambridge
Response: There are two trains departing Ely at 5:35 and 7:35 that will arrive in Cambridge by 8:00. Would you like to book either train?