generate response: I would like to arrive by 11:00 in Cambridge.. Intent: find_train. Slots: train-arriveby=11:00, train-day=thursday, train-departure=london liverpool street, train-destination=cambridge
Response: There are three choices. The TR3839 departs London at 05:39 and arrives Cambridge at 07:07. That's the earliest departure. Would you like to book a ticket?