generate response: I will be departing from birmingham new street. I don't really care about what time it leaves but I have to get there by 21:30.. Intent: find_train. Slots: train-arriveby=21:30, train-day=thursday, train-departure=birmingham new street, train-destination=cambridge, train-leaveat=dontcare
Response: Train TR6105 will arrive in Cambridge by 12:23. It costs 75.10 pounds per ticket. Would you like me to book a seat for you?