i am looking for a train that goes to cambridge and arrives at the destination after 13:00 .
user
i will be happy to find 1 for you . what day will you be traveling ?
assistant
i will be traveling on saturday and want to leave from peterborough .
user
i have a 13:17 or a 15:17 ? would those departure times work for you ?
assistant
no i need an earlier train .