The document outlines the roles and functions of travel agencies within the tourism industry, including various types of agencies such as retail and wholesale, and detailing the components of tour packages which consist of transportation, accommodation, and activities. It discusses the different types of tour packages, such as independent, hosted, and escorted tours, as well as the costing process involved in planning these trips. Additionally, it highlights how travel agents determine pricing through mark-up strategies and the importance of creating detailed cost sheets for managing travel arrangements.