Final answer:
True, time and courtesy are indeed dimensions of service quality, which is key to customer satisfaction and involves reliability, responsiveness, assurance, and empathy as well.
Step-by-step explanation:
It is true that time and courtesy are among the dimensions of service quality. Service quality is a critical aspect of customer satisfaction and involves multiple dimensions, as established by researchers Parasuraman, Zeithaml, and Berry. These dimensions include tangibles (physical appearance of facilities, equipment, personnel, and communication materials), reliability (ability to perform the promised service dependably and accurately), responsiveness (willingness to help customers and provide prompt service), assurance (knowledge and courtesy of employees and their ability to convey trust and confidence), and empathy (caring and individualized attention the firm provides its customers).