i am looking for a train leaving sunday that s going to london liverpool street .
user
where are you departing from and what day and time do you want to leave ?
assistant
need to arrive by 8:15 , not sure when we depart ?
user
i have a train departing from cambridge on sunday at 05:59 and arriving at 07:27 . would that work for you ?
assistant
yes can you get me 7 tickets and i'll need the reference number too please