Most airlines require their Ticket Agents to wear a company uniform while on the job to best represent their brand to current and prospective customers. As you prepare for your interview, try to research the uniform requirements for this position and reiterate to your interviewer that you are always willing to be compliant with all uniform requirements for this role. If you have prior experience in wearing a uniform on the job, talk about that experience. And while it isn't asked directly, this question also gives you the opportunity to talk about your thoughts on personal appearance in this role. Let your interviewer know that you take your overall appearance seriously because you know how it positively impacts how you represent your employer.