hello , i need a train to london kings cross after 21:45 , please .
user
there are several going to kings cross , where are you departing from and when do you went to leave ?
assistant
i am leaving from cambridge on monday .
user
tr2634 can get you there by 21:00 it is 23.60 pounds per person , would you like me to book you ?
assistant
yes please book it for 1 person .