关于给老外发传真的翻译

Hello, this is Tianjin Aimei Technology from China. We have a fax for Judy, could you please give me a signal?

Dear sir:
hello!
this is the AIMEI technology,and there have a fax for the JUDY,please give a signal!

显然2是不对的，因为对方不一定是sir

Dear colleague,

Here is AIMEI technology from China,
There have a fax for the Miss Judy.
Could you give a signal for the fax, please.

Regrads.