Question: what are all the alexa commands?
Answer: Ask for help: "Alexa, help."
Have a conversation: "Alexa, let's chat."
Mute or unmute: "Alexa, mute" or, "Alexa, unmute."
Stop or pause: "Alexa, stop" or, "Alexa, shut up."
Change volume: "Alexa, set the volume to 5," "Alexa, louder" or "Alexa, turn up/down the volume."