Flight attendants are trained professionals who work on commercial airplanes to ensure the safety and comfort of passengers during flights. They are responsible for conducting safety demonstrations, serving food and beverages, and assisting passengers with any needs that arise during the journey. In addition to their service roles, flight attendants are also trained to handle emergencies, such as medical situations or evacuations. They play a crucial role in maintaining a calm and safe environment in the cabin, making them an essential part of the airline industry.