Dan Mor's Office, how may I help you?
我能为你做些什么？

Is Dan in?
Dan在吗？

May I tell him who's calling?
我可以告诉他你是谁吗？

Yes, this is Tom White.
是的，我是Tom White.

Just a minute plese Mr. White.
稍等一下White先生。

Thank you.
谢谢。