i would like a train that leaves from stansted airport after 16:15
user
what day will you be traveling , and where will you be heading to ?
assistant
i will be traveling on monday and need to go to cambridge
user
there s a train leaving stansted airport for cambridge every hour on monday , by what time would you like to arrive ?
assistant
i do not care . give me the earliest 1 leaving after 16:15 .