The coffee company Hallow Bucks has designed a training program that is intended to foster the customer relations skill of its employees in coffee shops. To examine whether the program is effective or not, the company has made the trainees take an exam that is related to the knowledge of customer relations skill before and after the training. To the companies satisfaction, most of the trainees' exam score had been improved after the training program. As a result, the company has concluded that the training program was effective in terms of developing customer relations skill of its employees.