hello , i am looking for a train to get me to london kings cross .
user
ok . will you be departing from cambridge ?
assistant
yes , cambridge and i want to leave on sunday . i need travel time
user
travel time is 51 minutes . what time were you hoping to leave ?
assistant
i would like to leave after 13:45 .
user
there is a train that leaves at 15:00 would you like me to book that train for you ?
assistant
no thanks , i just needed the travel time for the train departing at 15:00 .