Dazed and Confused can be started after completing the opening missions of the Phantom Liberty DLC, mainly the quest titled The Damned. To begin this Side Job, reply to the message from Mr. Hands ...
Call Mr. Hands using your cell. He'll help you get an invitation to the event at Black Sapphire in exchange for increasing his reputation. You'll need to complete three of Mr. Hands' gigs in Dogtown ...