Mike Kelleher, long-time chief executive officer of Southwest Airlines, was known for inspiring and motivating his employees. He related well to people within and outside the Southwest Airlines organization. Mike Kelleher had good skills.

The answer is interpersonal skills.

Explanation:

Interpersonal skills are those we use to interact with other people. Having a comfortable talk with a co-worker or friend is an example of interpersonal skills.

Some aspects involved with interpersonal skills are the ability to listen closely, careful articulation of our own thoughts and self-regulation.

Mike Kellerher had good interpersonal skill

Explanation:

Interpersonal skills are the qualities and behaviors we exhibit while interacting with other people.

Having a good interpersonal skill include, being a good communicator, having emotional intelligence, empathy, leadership, positivity, openness to feedback etc.  

A good interpersonal skills are a key indicator of success in a working environment, as benefits include the ability to cooperate with teammates to solve difficult problems, as well as simply enhancing your popularity around the office.

Hence we can conclude, from the explanation relating to the question that  

Mike Kellerher had good interpersonal skill.

answer; (cognitive   dissonance);