i am looking for a train that arrives by 15:15 on saturday .
user
where would you like to depart from and where do you want to arrive at ?
assistant
i need it to depart from broxbourne and arrive in cambridge .
user
the tr7846 leaves at 09:32 and arrives at 10:32 . would that work ?
assistant
can i get 1 closer to my arrival time ?
user
train tr0279 arrives at 14:32 which is the closest 1 .
assistant
that s perfect . please book it for 4 tickets .