Clerk: Can I help you, Ma'am?
Shirley: I need a phone card for this new cell phone.
Clerk: Cool phone. What kind of phone card do you want?
Shirley: It's for my daughter who is still a senior high school student.
Clerk: Then the M-Zone will be suitable.
Shirley: What's special with the service?
Clerk: You know students use texted message service. And they provide favorable service for that.
Shirley: That's nice. And I need a pre-paid phone card.
Clerk: Oh, there is a sales promotion for it now.
Shirley: Oh, good. Then what is it?
Clerk: If you buy a pre-paid phone card worth 100 yuan today, you will get 50 yuan for free.
Shirley: May I have two of them?
Clerk: Sure. As many as you want.
Shirley: Okay, then a third one for my husband too.