what trains will leave from cambrige and arrive by 13:00 ?
user
well , that depends on where you are going and the day you are traveling . do you have that information ?
assistant
i need to get your london kings cross on saturday .
user
there are 4 trains that meet those criteria . they leave at 5 , 7 , 9 , and 11 and arrive 51 minutes after departure . would you like me to book 1 for you ?
assistant
what is the train id of the 1 arriving closest to 13:00 ?