How can I stop someone from sending me a facebook message?

Hello! I have a quick facebook question that I can’t seem to find the answer to.

I have a friend on facebook that I would like to prevent from sending me private messages. I do not want to unfriend or block this person, I just don’t want any more private messages from them.

Is there a way that I can filter who sends me private messages? On Facebook Help it just shows me how to receive messages from “everyone, friends, and friends of friends”. I’m wondering if I can block the messaging from just one person.

Thanks for your help :)