If you have ever flown commercially, you know that all staff of the airlines look the part and walk the part of being a true professional on the job and with this question, your interviewer will be looking to hear that you'll bring a professional attitude and demeanor to the Customer Service Agent job, if you are selected for the role. As you respond to the question of what being a professional on the job means to you, it is important to understand that professionalism is defined as the level of excellence that is expected of a professional, and that this definition directly applies to this role in the way that you handle yourself and your service to others while on the job.