This is related to the Harvard Business School Case Study, how Southwest Airlines came into existence and the detailed graphs and data are mentioned in the case study. Case Study was written by Prof. Cristopher H Lovelock.

Case study ref: 9-575-060, rev. Feb 19, 1985

Q) what are the core business process for Southwest Air Lines? What are it's implications?

(This is in reference to the period when Southwest Airlines came into existence in Texas Dallas, and had competition from other airlines)

They had come up with strategies like lowering fare, etc.