A trip agent is a person who specializes in arranging and booking travel for individuals or groups. The two crossword solutions for the term 'trip agent' are ACID and LSD. ACID stands for 'Airline Consolidators International Distributors, ' which are companies that specialize in selling discounted airline tickets. LSD stands for 'Leisure Services Distributors, ' which are companies that specialize in providing leisure services such as cruises, tours, and vacation packages.