generate response: I need it for Saturday and I want to arrive by 18:15.. Intent: find_train. Slots: hotel-area=south, hotel-bookday=saturday, hotel-bookpeople=7, hotel-bookstay=3, hotel-name=bridge guest house, hotel-parking=yes, hotel-pricerange=moderate, hotel-stars=dontcare, hotel-type=guesthouse, train-arriveby=18:15, train-day=saturday, train-departure=peterborough, train-destination=cambridge
Response: TR4494 will depart at 17:19 on saturday and arrive by 18:09. Would you like me to book it for you?