i need a train to cambridge .
user
sure , where will you be boarding and what day would you like to leave ?
assistant
i will board at king s lynn , before 13:30 on tuesday .
user
i have 8 routes which will arrive in cambridge by 13:30 . they leave hourly on the :11 from 05:11 to 12:11 , lasting 47 minutes . would you like to book ?
assistant
i would like the train that arrives closest to 13:30 please . i will also need the departure time .