To better impart a pleasant flying experience, flight attendants spend much of their in-flight time seeing to the comfort and needs of passengers. Pre-flight, flight attendants ease frustration and wait time by helping passengers to their seats and assisting with the stowing of carry-on luggage. They see to passengers' comfort by distributing sleep masks or blankets, and some airlines provide headsets or magazines if requested. Depending on the flight length, flight attendants may serve beverages and food as many as three times to passengers and to cockpit crews. Throughout the flight, flight attendants respond to passenger requests and fulfill them as much as possible. At the end of the flight, the attendants help passengers with their carry-on luggage and exiting the plane. These duties keep an attendant busy, but they also help build a relationship between passengers and the airline.