The document outlines a three stage model of consumer buying behavior in services: 1) pre-purchase including need recognition, information search, and alternative evaluation; 2) service encounter which can be face-to-face, telephonic, or remote; and 3) post-encounter evaluation of service performance and future intentions. It also discusses factors that influence each stage like information sources, types of risk, service qualities, and post-purchase evaluation leading to word-of-mouth or searching for alternatives.