Last winter, I was stuck at the airport during a massive storm and the line for the service desk was wrapped around the terminal. I tried calling, but the hold time was over an hour. That’s when I discovered their in-app chat. It was a game-changer! I was able to talk to a representative while sitting at a cafe. For me, having that direct digital line is the best way to instantly, or modify flights because you avoid the noise of the terminal and get a written record of your new itinerary.