i need a train from london liverpool street station on wednesday .
user
what is your destination , please ?
assistant
i am heading to cambridge for an important visit . can you get me there by 11:00 ?
user
there is 1 train leaving at 7:39 arriving at 9:07 would that work for you ?
assistant
that should be perfect . how many tickets can i get ?
user
you can buy up to 8 tickets .
assistant
just 1 is fine .