i need to find a train leaving cambridge after 12:15 .
user
okay . what is the destination ?
assistant
that will be london king s cross , and i'll be travelling on tuesday .
user
tr0315 is the first train out after 12:15 . it departs at 13:00 and arrives at king s cross at 13:51 . would you like a ticket ?
assistant
yes , i need 6 of them .