A:Could I try on these jeans, please ?
B:Certainly, what size are you ?
A: A medium, I think.
B: Fitting room is there.
A: Thanks, could you give me largest size ?
B: Yes but largest size is only in other colour.
A: Thats OK, i like this jeans, what's the price ?
B: 25 $
A: Thank you, can you put the receipt into the bag ?
B: Here you are, Thank you, Bye.