Well, if you leave your name and number, I’ll tell him to call you back when he is free.

那么，您留下您的姓名和电话号码，我会告诉他让他有空时给您回电话。

youdao

Please call me back when you are free.

等你有空的时候给我回电话。

youdao

Well, if you leave your name and number, I'll tell him to call you back when he is free.

那么，你留下你的姓名和电话号码，我会告诉他让他有空时给你回电话。

youdao

The free version can't call back a message before it's read, or track when messages have been read.

CNN: Make your e-mail disappear