To be completely honest, I have always wondered what happens when someone named Alexa buys an Echo because every time you say Alexa, the Echo will respond right?!
"Per The Wall Street Journal, the answer is a resounding yes. With Alexa being the 39th most popular girl’s name of 2006, households across the country have been scowling at their Echos in frustration."
So how come they didn't pick a name like Siri like Apple did? To keep it more relevant and be able to chime in more. But you can change Alexa's name!