HELP! Alexa is destroying the civility of this family.

My kid used to say "please" all the time when asking for something, and he would do it in a polite manner. I noticed when he interacts with Alexa his tone is always on the bossier side. This is slowly starting to creep into his interactions with other people. I know it's my responsibility to correct him, but for the love of all that's sacred, could we please have an option to make Alexa carry out orders only if asked with a "please".