"I have been passively seeking a new position for quite some time and haven't jumped on anything yet because I want to ensure it's the right fit. I feel this job is right for me, at this point in my career, because it offers an opportunity for me to utilize my recent education in Communication while allowing me to advance in my management skills."

"This job will fit perfectly surrounding my school schedule. I hope once I complete my education that, I can be given full-time hours for the summer. I am excited to work for Waitrose because of the flexibility you offer students and the growth potential."

You want to focus on being positive in your response. The interviewer does not want to hear that you left your previous job because you did not like your boss or are switching industries because you could not tolerate the schedule. Explain how working for Waitrose will benefit you in your career.