i need a thursday train that arrives by 8:30 .
user
where are you leaving from and going to ?
assistant
i need to go from cambridge to stevenage .
user
you have 2 options , tr2016 departs at 05:21 and tr4376 departs at 07:21 . would you be interested in either of these ?
assistant
either 1 is fine . i need 8 tickets please .