i am looking for a train departing from cambridge after 10:00 .
user
i found this booking for you . can i book it ?
assistant
i did not tell you where i am going , how could you book it without that information ?
user
my apologies . i found a train leaving cambridge for london kings cross on friday , leaving at 13:00 , for 23.60 pounds . will that work for you ?
assistant
actually i need a train for sunday leaving from cambridge , going to birmingham new street departing after 10:00 .