generate response: That might be a little early. Can you find something that arrives clsoer to 17:30?. Intent: find_train. Slots: train-arriveby=17:30, train-day=monday, train-departure=cambridge, train-destination=london liverpool street
Response: TR3602 arrives at london liverpool street by 17:27, if that is cutting it too close the next closest is TR1764 arriving by 15:27.