generate response: I am trying to get to london liverpool street on saturday.. Intent: find_train. Slots: train-arriveby=08:00, train-day=saturday, train-departure=cambridge, train-destination=london liverpool street
Response: The TR2895 leaves Cambridge at 05:59 on Saturday and arrives at London, Liverpool Street at 07:27. Would you like to book a seat on this train, or keep looking?