How do you handle conflict with a fellow employee?

"I make a point of being easy to work with. I keep my nose out of gossip and try to remain professional when there's conflict. But getting along with people can be difficult for any number of reasons, only some of which I can control. I do my best to articulate my part of the disagreement. I try to do it calmly and treat them how I'd want to be treated. I recall a time when a salesman seemed to misrepresent the cost and time of a particular product we made, and it put a lot of undue pressure on us. It was frustrating, and it kept happening. I knew it wasn't personal, but when the error isn't corrected, it can feel personal. I asked him to come to the back. I, alongside the manager, walked him through the process of how we made the product, demonstrating the time, effort, and technical difficulty it required. Finally, after seeing the process with his own eyes, he got it. More importantly, I took the time to educate him, and I put aside the frustration I felt and met with him like I'd meet a customer."