i need to book a train
user
where will the train depart from ?
assistant
it will depart from cambridge on tuesday .
user
i have several for tuesday . what time were you looking for ?
assistant
i need to get to ely by 19:00
user
tr7733 is the last train of the day and can get you there by 18:07 , would you like me to book you ?
assistant
no i need to know the departure time for that ride .