While there are many directions you can take your answer to this question, it is important to know that your interviewer will not just be looking to hear how you communicate with others. They will also be looking to hear about your own personal self awareness and that you are familiar with your strengths and weaknesses when it comes to communication. Because you will be working face to face with both customers of Air New Zealand and your fellow staff members, your interviewer wants to know that you are comfortable in your own shoes when it comes to communication with others. Prior to your interview, make sure to do some self reflecting to be able to accurately describe your communication style, why it works for this kind of job, and highlight one area where you think this job will help you become a better overall communicator.