Customer Communication Question:

When asking this question, an employer isn't interested who you find it difficult to work with. They want to know what you do to ensure an effective working relationship with such individuals.
A possible answer for this question could be: I get on with all types of people, but get frustrated when working with those who don't share my work ethic.
In these situations, I find that by developing a good rapport the person, letting them know how important their contribution is to getting the job done, and appealing to their better nature things get done.