How do companies that book airline tickets make money? Thank god, help me.

There is an indispensable relationship between airlines and agents, just like when airlines produce products, they have to hire a group of salesmen (airline managers and salesmen) to run the market, and then the agents "take the goods" for sale, but the difference is that the agents do not directly increase the price, but take the agency fee from the airlines. Generally, the normal discount (including more than 40% discount) is 3+x, depending on the sales situation of airlines and different airlines at different times, the special price is only 30% discount. Like all retailers, selling air tickets is not a very profitable industry, but it is also an indispensable occupation in society.