Employers want to know what kind of position you are looking for, whether it is just a job or if you are career minded. They also want to know whether or not you are wanting to work there for a specific type of work experience. For example you may be applying at an ad agency for customer service, but you are studying graphic arts in college, so you therefore want some exposure to the advertising world, and maybe they can use you at a later date in the graphic arts dept. Etc.
