The travel business is an industry that involves the transportation of people and goods from one place to another. One of the most common forms of travel business is the AIRLINE, which is a seven-letter word. Airlines provide air transportation services for passengers and cargo, and are responsible for the safety and comfort of their customers. Airlines also provide other services such as ticketing, baggage handling, and in-flight entertainment. Airlines have become an integral part of the travel industry, providing a convenient and efficient way to travel.