S : What can I do for you, Sir ? C : 1 . S : For yourself ? These are all for young people. 2 . C : I like the blue one. S : 3 . C : Thank you. 4 . S : One hundred yuan. C : Oh , it costs so much. S : 5 . It is cheaper. It is only fifty yuan. C : OK. I’ll take it. Thank you.