Susan:
Hello! This is Susan, are you David? 
你好，我是苏珊，你是大为吗？ 
David:
Yes，what can I do for you?
我是，有什么能帮你？
Susan:
If you would, please give some idea about my progrom.
能为我的节目给点意见吗?
David:
Sorry, I'm afraid I can't talk long. I have to go to a meeting now. I'll get back to you.
对不起，我恐怕不能聊太久，我要去开个会，回来再找你。