planning for a trip in cambridge .
user
great ! i can help you with train information , if you need it .
assistant
i am looking to book a train to broxbourne on friday .
user
what time would you like to leave ? the trains begin to leave at 05:01 and leave once an hour after that .
assistant
the train should depart from broxbourne and should leave on friday .
user
is there a specific time when you need to leave or arrive ?
assistant
i need to arrive by 13:30 please .