generate response: I will be traveling on Thursday and I need to leave sometime after 15:00.. Intent: find_train. Slots: train-day=thursday, train-departure=cambridge, train-destination=leicester, train-leaveat=15:00
Response: The first train after that time on Thursday is the TR9839, leaving Cambridge at 15:21, arriving in Leicester at 17:06. Would you like to book a ticket?