How you answer this question will give the interviewer insights into your confidence, self-perception, and attention to detail. It offers you an opportunity to circle back to previous questions you could have elaborated on more. Your answer will also demonstrate how effective your communication skills are.

Be honest and confident in your answer. Your answer could serve to demonstrate you're an active listener and that you pay attention to details. Soft skills, such as empathy and the ability to adapt your communication style to a variety of personality types are desirable traits in any candidate. Also, pay attention to the details throughout the interview process. Pay attention to the interviewer's body language, tone, and facial cues. Your observational skills in this regard could be seen as an asset as well. If you feel you've left out any relevant information, be sure to mention it. Lastly, avoid asking the interviewer how they think you are doing so far. You'll come across as insecure. This defeats the purpose of the question.