Any time you work with someone else, there is a chance of having a disagreement about something at one time or another. The interviewer knows this. It's human nature for people to have their own opinions. What is important to the interviewer in this question is whether or not you are willing to compromise and work through difficult situations with your co-workers. Being unwilling to compromise or find alternative solutions to a dispute can affect everyone on the team, even if it is indirectly. Sharing a personal experience is OK, but do not embellish it to 'be the hero.'