Responder

Did someone just say something that you don't know how to respond to? Fear not, this extension is here for you! At the click of a button you instantly receive a unique response that you can then tweak to your needs or send as is. The extension adds a non-intrusive thumbs up button to any chat window at google.hangouts.com and pressing that inserts the response into your message box.

Leave any issue: https://github.com/SirFurness/Responder/issues
Check out the code : https://github.com/SirFurness/Responder