Alexa gives you GLaDOS’s (pronounced GLA-dis) opinion of random things, Aperture Science, or the portal gun. All quotes are from the first Portal game. Simply ask her to say something.
“Alexa, ask Glados to tell me something”
“Alexa, tell Glados to tell me about the portal gun”
“Alexa, ask Glados to give me info about Aperture Science”