Answer:
Interpersonal Skills
Step-by-step explanation:
Interpersonal skill is the skill that connects one person with other due to the employee's behavior which helps him to get along with others. In other words, when we talk about interpersonal skills we are actually talking about the excellent way of interacting with people that results in better relation, respect, better job environment, motivation of employees, etc.
In this case, Herb Kelleher, the CEO has better relations with his company employees as he interact with the people well which is interpersonal skills.