把下列句子重新排列成一段通顺的对话。   

1. Come in, please.            

2. I'm fine, too.

3.  May I come in?          

4. Is that a radio?

5. How are you, Helen?        

6. OK.

7. Fine, thank you. And you?    

8. Turn on the radio, please.

9. Yes, it is.