Review the job posting before the interview to familiarize yourself with the duties involved in this role.
Answer this question by providing examples of past customer service experiences in a professional, volunteer, or alternatively educational (i.e., university) setting, while mentioning some of the duties involved (as per the job posting) performed in other positions, should you have such experience. This will demonstrate you already have the required experience for this role.
"While in university, I worked as a (X position tile) for (X company), where I was responsible for (X relevant duties as per the job posting). I also worked as (X position title) for (X company) upon graduation from university, where I was responsible for (X relevant duties as per the job posting)."