What motivated you to become a slot attendant? Was it some friend or family member? Some childhood story or was it some movie you watched? For answering this question be honest and tell the interviewer about your motivation for being in this profession.
Maybe you are in this profession for the money or the free drinks but thats something you may want to hide. Your answer should comprise of something thats inspiring but also sounds impressive. So you should avoid mentioning anything that may sound unprofessional.
"I wanted to be a slot attendant because this is one job that will teach me a lot about the casino, the people who visit them and also the people who run these casinos. Since some day down the line I wish to be a casino manager so this seemed to be a great choice to start my career with."