This question requires thought and introspection from the interviewer. Take some time to think about your patients as a whole group might think of you, not just your favorite patients. Were you kind, pleasant, efficient, selective, gossipy, or talkative? Think about your employee reviews. Were there common themes of conduct? Choose strong words that convey confidence, strength, and integrity. Being the fun aide doesn't convey professionalism but being a pleasant, timely, kind, and efficient aide conveys respect and professionalism.