i need help finding a train .
user
i can help with that . where would you like to go ?
assistant
bishops stortford and should leave after 19:15 on sunday and go to cambridge
user
i have 2 trains on a sunday matching those demands . 1 leaves at 21:07 and 1 leaves at 24:07 . any preference ?
assistant
the 21:07 train please .
user
train tr7879 will leave bishops stortford at 21:29 and arrive at cambridge by 22:07 .
assistant
cool i need to tickets