You shouldn't tell your boss what to do.
Jim's boss tells Jim that the boss will be giving a presentation to some clients.
Jim wants to react to his boss.
Jim asks his boss let him know if there's anything Jim can so to help them.
Jim tells his boss not to give the presentation because it may not go well.
Jim's boss thanks Jim and sees Jim as a helpful employee.
Jim's boss rebukes Jim for trying to give them orders and sees Jim more negatively after that.