You shouldn't listen to an employee who wants help to solve a conflict with another. You might feel proud of “mediating” among your team members as you discuss the problem with each one of them. Such mediation, however, is a poor way to resolve matters. The pairwise processing of information prevents creative dialogue.
Consider Joe and Sally, who report to Carla. Joe tells Carla what he thinks ought to be done and why Sally is wrong. Sally tells Carla what she thinks ought to be done and why Joe is wrong. Carla tries to figure out who is right, and comes up with her own idea. Joe, Sally and Carla are not working together, which is what they should do to find the best solution.