Kind request from a novelist

Dear Mr. Wonder I know you are a very humorous person. I wanted to ask you if I could use this joke about you on the back of my novel. This book is a comedy and is about a cruise ship adrift and the passengers who can't seem to get along. Basically a floating Tower of Babel. The joke in question is included in a list of comments from magazines and invented characters. His joke is: I'm waiting for the audiobook Since I wouldn't want to offend you in any way, I kindly ask your permission first. With much respect, Oliver Alex Fabbro from Italy