A person or organization selling travel services (such as transportation, accommodation and inclusive tours) on behalf of principals (such as carriers, hotels and tour operators) for a commission. Most travel agents also normally provide ancilliary services, such as obtaining passports and visas, traveller’s cheques (traveller’s checks), currencies and travel insurance. The principal functions of the travel agent are those of a retailer ??? to provide access for a principal to the market and to provide a location for the customer to buy travel services.