How come blind people never ask for directions?

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Being handicapped is something you just have to live with. I have the utmost respect for the phyically handicapped individuals in this world. In fact, I treat them no different than any other person I meet. Within the world that revolves around my head, questions come through to me that are hard to answer. Some of these questions involve touchy subjects such as blind people at the airport and how they navigate around these areas. I try and not let it get to me, but somethings occur that prompt me to scanvenge my brain for answers. The other day I was at the Phoenix Airporta and I saw a man with a seeing eye dog walking around by himself. It's not that he was by himself, but the fact that he was being pulled around by a dog. Did the dog know where to go? Did the dog have a plane ticket? I mean, it wasn't like the dog was dragging the man around. The man was taking his time and allowing the dog to take him to some destination that I guess was the final one. Who knows. All I knew was that if for some reason if the man with the seeing=eye dog had to ask for directions, would the dog take note and listen? When does a blind man or woman just give up when they are lost ands ask for directions?