What is the noun formation of please?

There isn't a direct noun formation of "please" in English. "Please" is an interjection, a word that expresses emotion or feeling, and it doesn't inherently have a noun form.

However, you could use related words to convey a similar meaning:

* Courtesy: This is a noun that means "politeness and consideration for others."

* Polite request: This is a phrase that emphasizes the respectful nature of a request.

* Kindness: This noun refers to a gentle and thoughtful nature.

The best choice depends on the context of your sentence.