Final answer:
Consumers have two general levels of service expectations: desired service, which is the hoped-for level of service, and adequate service, which is the minimum acceptable standard.
Step-by-step explanation:
The two levels of expectations that consumers generally have about services are desired service and adequate service. Consumers often have a preconception of the desired service, which is the level of service they hope to receive - it's a blend of what they believe 'can be' and 'should be provided. Then there's the adequate service, which is the minimum acceptable standard they are willing to tolerate before considering a service unacceptable.
Understanding these expectations is critical for service providers aiming to meet and exceed customer needs, ensuring customer satisfaction and fostering customer loyalty. These concepts are foundational in service marketing and customer relationship management.