yes i am looking for a train leaving cambridge on a thursday .
user
tr8272 leaves at 05.00
assistant
i am heading to broxbourne , and i would like to leave after 13:45 .
user
your best bet is probably the tr9033 . it leaves cambridge at 14:01 . would you like a ticket ?
assistant
actually , i gave you the wrong day . i would like to travel on wednesday , from cambridge to broxbourne , and i would like to leave anytime after 12:45 .
user
no problem . i found 11 trains matching your request . what time would you like to arrive ?
assistant
no i would just like the earliest train that leaves after 12:45 .