i am looking for a saturday train departure from cambridge
user
what destination would you like me to look for ?
assistant
i am hoping for a train to bishops stortford after 21:15 .
user
there are 2 trains that fit this request . 1 at 21:29 and another at 23:29 . did you want me to book 1 of them for you ?
assistant
yes please book the train for 23:29 .