Andy-Lee

C：I bought two expensive books half hour before,but i forgot to take away.
M：who service for you,sir?
C：that lady behind the counter.
M：what kind of book do you buy?
C：that two books just on the counter .
M：Caroline,did you service this sir half hour ago?he said that he was the man who bought this two books.
Caroline：I can't remember.I serviced the guy wear a hat.
M：do you have a hat,sir?
C：yes,i have.
M：do you wear your hat,please?
C：OK。
M：Caroline，are you service this one?
Caroline：yes,he is.I can recognize him now.