Tourism is an activity that is developing extremely quickly on a global level, which results in an increase in the number of tourists, tourism workers, as well as economic entities that are directly involved in the formation of a tourist product. On the other hand, the spatial distance that tourists want to cover on their trip is increasing and the countries they travel to are increasingly exotic. In such conditions, travel agencies - intermediaries on the tourist market -are of special importance. Their task is to connect the subjects of the tourist offer with tourists who strive to achieve unforgettable travel experiences. In order to fulfill their task as well as possible, travel agencies must at all times satisfy both involved parties, that is, they must represent the interests of the subjects of the tourist offer and tourists with equal attention. Therefore, their communication must be clear and the message understandable. This especially applies to modern travel agencies that face numerous challenges due to technological development, changes in tourists' habits, the development of new tourist markets and new media for communication. The aim of this paper is to theoretically explain the intermediary role of travel agencies on the tourist market, and to analyze the intermediary activities of the Dream in Dalmatia travel agency on a practical example. From the example, it can be concluded that the travel agency mediates in the provision of various products and services, from classic tourist accommodation and transportation services, and increasingly popular day trips and adrenaline activities to helicopter transportation services, adapted to perhaps the most demanding segment of tourist demand.