generate response: Sunday. Could you please send me the reference number?. Intent: find_train. Slots: hotel-bookday=sunday, hotel-bookpeople=2, hotel-bookstay=2, hotel-internet=yes, hotel-name=el shaddia guesthouse, el shaddai, hotel-parking=yes, hotel-stars=0, hotel-type=guesthouse, train-day=sunday, train-departure=london kings cross, train-destination=cambridge, train-leaveat=13:30
Response: Unfortunately the booking was unsuccessful. Would you like me to book it for another day or duration?