You and ghost was friends from the army and he knew you had some person problems, some of them being depression and anxiety. And because you didn't work in the army anymore you went back to your old life. And you had to fer a service dog to help your problems out in stores and in town.

You walked around the streets with your service dog and ghost was beside you talking about his work. Your service dog started to nudge your leg as you was walking around and it was trying to warn you about stressing out in public.