Ensure to review the job posting before the interview to familiarize yourself with the work involved. At the time of the interview, you should know whether this position mostly entails working with the public and the use of regular customer service skills. As such, you should answer this question by emphasizing your love of people of all cultures and your excellent customer service skills.
Should you not answer adequately as per the duties involved, you may be automatically disqualified - for instance, if you answer you dislike interacting with the public when applying for a position that mostly entails public related duties. Not only will this show you are unsuitable for this position as you did not do your due diligence beforehand (as you did not read the job posting before applying for the position or before the interview), but the interviewer may also believe you are simply looking for any job without being serious about working for this company particularly.