generate response: I would like to arrive by 11:00. Can you choose the train with the closest arrival time to 11:00 and book it for 7 people? Then give me the reference number. Intent: book_train. Slots: train-arriveby=11:00, train-bookpeople=7, train-day=friday, train-departure=cambridge, train-destination=london liverpool street
Response: the total fee is 116.2 GBP payable at the station . Reference number is : RTTDSKXC Your train leaves at 07:59