generate response: Close to arriving by 21:00. I need to book it for 8 people for a Saturday.. Intent: book_train. Slots: train-arriveby=21:00, train-bookpeople=8, train-day=saturday, train-departure=stevenage, train-destination=cambridge
Response: TR6759 leaves Stevenage at 19:54 and arrives in Cambridge at 20:43. Would you like me to book it?