generate response: I changed my mind can you book that for me please?. Intent: book_train. Slots: train-bookpeople=1, train-day=wednesday, train-departure=peterborough, train-destination=cambridge, train-leaveat=13:00
Response: Your all set, the total fee is 16.5 GBP payable at the station . Reference number is : EEJF27IZ . Bye!