The etymological derivation of this word is from the Latin ad gratum, via the Old French agrément. The English word is reported in the best Italian dictionaries with the obvious meaning of approval, consensus and agreement. In the tourism industry the word agreement is normally used in contracts between Italian Tour-Operators and Correspondents or foreign Partners. Moreover the word is also used to indicate the agreements between Travel Agencies (concessionaries for international air ticket sales) and Airline Companies. These agreements are sanctioned by the Passengers Sales Agency Agreement drawn up by the Geneva-based IATA.