Complete the following dialogue.( 补全对话 ) 。 A: What can I do for you? B: Yes, please. 1 But what kind of flowers should I buy, roses or cartons( 康乃馨 )? She likes red roses best , but today is Mother's Day. A: I think carnations are special for today. They show happiness, sweetness and love. They are for mothers. B : All right. Can I have a look at those carnations? A: Sure . 2 B: Red A: What about these? B : Great . 3 A: 30 yuan B: OK . 4 A: Thank you. Here's the change and a card from our shop to your mom. Best wishes for her. B : 5