i need a train to cambridge .
user
ok , when and where are you leaving from ?
assistant
i'll be leaving from bishops stortford on saturday , and i need to get to cambridge at or a little before 14:00 .
user
i can get you a train arriving at cambridge at 12:07 , how many tickets will you be needing ?
assistant
just 1 , please .
user
i booked train id tr4594 . your price is 8.08 pounds . is there anything else i can do for you ?
assistant
yes i need the reference number for the booking please .