The interviewer wants to hear that you handle conflict appropriately in the workplace. Start off by sharing with the interviewer that you typically get along with your co-workers great, but from time-to-time, you might disagree with someone.
Next, think of a time when you had a conflict with a co-worker. Tell the interviewer a brief overview of why you had a disagreed. Discuss how you ensured that you did not embarrass the individual by pulling them aside into a private space to have the conversation. Tell the interviewer that instead of continuing to be frustrated, it was better to talk about the situation to resolve it.
Finally, be sure to mention that the person continued to have a respectful relationship with you following the conversation due to the way that you handled the situation.
"I recently worked with someone who didn't come to work on time. She was inconsistent, and I often needed to cover her shifts. I did end up talking to her, letting her know how her choices affected me. She apologized, but the situation did not improve. Eventually, she was terminated."