i am looking for train from london kings cross and should leave after 21:30 .
user
we have several trains available . is there a particularly day you wish to leave on ?
assistant
i would be leaving on tuesday going to cambridge .
user
i have 1 train available that meets what you need . train tr2471 leaves at 23:17 and arrives on 24:08 . would you like me to book you a ticket for this train ?
assistant
yes , please . can i have the train id and total travel time , as well ?