I have heard this too many times from buyers: "My agent does not listen to me. The properties they show me are not what I told them I desire!!"
Well, it boils down to this. If your agent does not take the time to really UNDERSTAND what you are looking for, chances are, they will show you properties you are not interested in.
When interviewing agents (or getting referred to one), make sure you pay attention to the questions they ask you. You want them to ask you very specific and detailed questions not only about the type of property you are looking for, but also about your lifestyle, your hobbies, your inspirations, etc.
Only in this way can they really understand what it is that you are hoping to find among the thousands of listings available on any given day.