A gate agent works at the boarding gates of an airport. As a gate agent, you most likely work for a single airline and move to various gates as needed. Your job duties include checking boarding passes, assisting passengers onto flights, upgrading seats, accommodating tardy passengers, and other similar duties. Many gate agents double as airline customer service agents. You take on additional tasks like talking to customers on the phone, staffing the airline’s ticketing desk, and checking baggage. You are a public representative of your airline, so a friendly and professional demeanor is a must.