This position requires a flexible schedule as we are open evenings, weekends, and most holidays. Are you able to commit to these hours?

"I am happy to work a flexible schedule and overtime as needed. I take an evening college course on Tuesdays and Thursdays, so I would not be available those days after 5 PM."

"I understand this role will include working evenings, weekends, and holidays. I am available to work whatever schedule I am given and am happy to work overtime as well."

The job description should have prepared you for the shifts you will be asked to work. Let the interviewer know you are aware of the need for a flexible schedule and that you can work any schedule they need. If you are a college student or have another outside obligation that will hinder you from working a specific day, let the interviewer know during your interview.

Community answers are written by other candidates practicing this set. Reading how others frame the same question is one of the fastest ways to sharpen your own.