generate response: I will be departing from Cambridge, and need to arrive by 08:30. Intent: find_train. Slots: train-arriveby=08:30, train-day=wednesday, train-departure=cambridge, train-destination=london kings cross
Response: The TR1058 Leaves Cambridge at 7:00 and gets into London Kings Cross at 7:51. The cost is 23.60. Would you like to book it?