1.0) punctuality for each flight. 2.0) such as the staff attentive but not pushy, polite attentive service. 3.0) the airline's reputation. Their income or revenue 4.0) of the family.
1.) punctuality in flight 2.) The service of the staff as polite smile. The attention to service, 3) the reputation of the airline 4.) their income or family income.