Preset Text in the Description Area

Guys,

How can I have some preset text in the description area? So, the client has a kind of format what to write in that description area. For example here

Hello there,

Thank you for reaching out to us and asking about this. I’d like to help, it isn’t theme-related question. Because this is an extra feature that is not commonly used. Any text editor should not contain any predefined text, except for specific purpose. Sorry, Airi doesn’t such this kind feature. Probably you should use an extra application like this:

https://www.trankynam.com/atext/

Regards,
Kharis