son has decided I needed new technology so has bought me a Amazon Echo Dot (2nd Generation), so setup and linked to laptop, tablets and phone, unlike him I don't have the latest gadgets, ie smart tv, my query is when I switch laptop, tablet etc., on or off, the echo dot tells me I am doing this, as if I didn't know, after all I have switched the things on/off, how do I turn this voice notification option off, all help and advice appreciated