i am looking for a train leaving cambridge .
user
we have quite a few , i am sure we'll be able to get you where you want to go . where is that , exactly ?
assistant
i would like to go to leicester and leave on friday .
user
i have quite a few trains that fit your criteria . is there a certain time you need to leave or arrive by ?
assistant
departing from cambridge and i want to arrive somewhere around 20:00 , can you get me 7 tickets and i'll need the reference number too .
user
the tr2508 arriving at 19:06 sound okay to you ?
assistant
that sounds great , thank you . could you book that for me for 7 people ? i will need the reference number as well .