generate response: Ok. I need a train after 14:00 on Wednesday. It needs to leave from London Liverpool Street and get to Cambridge. I need the train ID please.. Intent: find_train. Slots: hotel-area=north, hotel-bookday=wednesday, hotel-bookpeople=4, hotel-bookstay=5, hotel-name=home from home, hotel-parking=yes, hotel-pricerange=moderate, train-day=wednesday, train-departure=london liverpool street, train-destination=cambridge, train-leaveat=14:00
Response: The TR7978 is the one you are looking for. It leaves London Liverpool Street and 15:39 and arrives at Cambridge at 17:07. Do you need me to book it for you?