The answer to this question will help in determining whether you really like this job or not. The one thing that you like the most about being a slot attendant may not be a part of the job at all or it might be a major part of it. So this will help in determining if you will be a good fit for this or not.
For answering this question, go through the job description and see what parts of the job you really like and then form your answer accordingly. Anything that will show the interviewer you would enjoy the job and the maximum benefit you would gain from it all if you were given the chance.