There is no consensus on definition of quality. According to [9] quality is zero defect -doing it right
first time. Quality means meeting the requirements of customer. All service should be aimed at meeting
the customer’s requirements by eliminating non quality traits [16]. [14] unambiguously support the
notion that service quality, as perceived by consumers, stems from a comparison of what they feel service
firms should offer (i.e., from their expectations) with their perceptions of the performance of firms
providing the services. Service quality from the provider’s perspective means the degree to which the
service’s features conform to the organization’s specifications and requirements. From customers
perspective, service quality means how well the service meets or exceeds expectations [11].