Portfolio and consistency

Since we are all putting only the best shots into portfolio, have anyone ever had a client whose expectations were not met? I am amateur myself and if I put only a handful of selected photos, it would not tell my real level as a photographer, because some of those shots are just lucky snaps on right moment and I 100% could not deliver same kind of quality, every time. How do you deal with this, or do you deal with it at all?