Why use a persona?
A persona is a design tool that helps you write conversations. Before you can write a dialog, you have to have a clear picture of who is communicating. A good persona evokes a distinct tone and personality, and it’s simple enough to keep top-of-mind when writing dialog. It should be easy to answer the question: “What would this persona say or do in this situation?”.
Users will project a persona onto your Action whether you plan for one or not. So it's in your best interest to purposefully design the experience you want users to perceive, instead of leaving it up to chance.
⚠️ The goal of creating a persona is not to trick the user into thinking they're talking to a human being, but simply to leverage the communication system users learned first and know best: conversation. ⚠️