i need a train from london kings cross to cambridge .
user
what day will you be departing ? trains depart starting at 5:17 then at each odd hour . trains arrive the next hour :08 .
assistant
on sunday . but i have to be there by 19:15 . which 1 works best for that ?
user
there are 7 trains . the 1 that arrives closest to 19:15 is tr2952 which leaves at 17:17 and arrives at 18:08 . would you like to book this ?
assistant
is there an earlier train ?