generate response: Sorry, I should have specified but the booking needs to be for 3 people. Intent: book_train. Slots: train-arriveby=16:45, train-bookpeople=3, train-day=saturday, train-departure=birmingham new street, train-destination=cambridge
Response: Booking was successful, the total fee is 180.24 GBP payable at the station for 3 tickets. Reference number is : 0UP7SB1H .