A:Hi,there! What can i help you today?
B:...emmmm...I wanna buy a present for my grandma's birthday.
B:but that's what i gave her last year.
A:oh,okay.let's find out some thing else.
C:hi,B! what a surprise to meet you here!
B:hey,C! long time no see! how's going?
C:everything is fine! what are you doing here?'