The distribution network of companies (operating at a national or international level) that resell travel products to visitors that have been reserved and purchased from other tour operators or travel businesses. This includes travel agencies offer travel services and assistance to groups and individuals, including documentation, ticketing, booking for transportation and/or accommodation. Tour operators - companies that bring together separate travel components (such as airline seats, hotel rooms, activities, and attractions), into one package. Examples of tour operators include Thomas Cook (UK), DERTOUR (Germany), Scenic Tours (Australia), Tauck Tours (US) Online travel agencies (OTA’s) – OTA’S specialize in offering planning sources and booking capabilities. Examples of major OTA’s include Expedia, lasminute.com, Travelocity.