You clearly have a bad hose that is leaking at the junction of the rubber part to the metal connector. You can do this repair yourself. Caution: Grip the radiator nut connector while unscrewing the hose; The radiator tank is plastic. Also grip the connector on the AT line while unscrewing the other end of the hose. The amount of fluid loss will be minimal. And don't be surprised when you see the spring on the new hose - just as your right side. This leaking hose is probably a cheap knock-off.

and don't worry about air in the system; it won't happen.

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