Explain the 21th century practice of airline ticketing and reservation

Reservation and ticket agents are employed by airlines, bus companies, railroads, and cruise lines to help customers in several ways. ... They determine whether seating is available, answer customer inquiries, check baggage, and direct passengers to proper places for boarding.

Explanation:

i think this

hr2520 is the patient's act. there is required the secretary of health to summon a committee to develop a national strategic plan of prevention. this committee has forth provisions that make possible for the govern entities to acquire private health insurance services.

is easier to keep this hr2520 as federal, because that way the secretary of health has centralized power to deal with private insurance companies and the federas government has more ways and power to negotiate with them, than doing this process state by state in their specific terms.