Hello

I would like to use conditional formatting (or other hypothesis) for the following:
If one cell has "yes" and the other has "-", format with red color. I'm not getting.
I tried the formula: If in the cell has "yes" and in the other has "-", write in another cell "no" and based on this "no", format in red. But I didn't want it to be like this.

Thank you for your attention and for your help.