i need a train on monday leaving birmingham new street ?
user
where are you headed ?
assistant
birgmingham new street from cambridge
user
what time monday would you like to depart ?
assistant
anytime after 21:00 .
user
tr8406 will depart at 21:40 . is that okay ?
assistant
yes will you book it for me ?
user
how many tickets will you need ?
assistant
i need 2 tickets and a reference number please