generate response: I need to travel on saturday and leave after 11:45. Intent: find_train. Slots: train-day=saturday, train-departure=peterborough, train-destination=cambridge, train-leaveat=11:45
Response: There are 25 trains that fit your needs. The earliest train leaves at 11:48 and arrives in Cambridge at 12:38. Would you like me to book you on this train?