A Chinese Phrase for Asking which line to take: "请问去机场坐哪条线？"

"请问去机场坐哪条线？" means "Which line should I take to the airport?" and it's the basic Chinese expression used for asking which line to take. It's very handy at stations and on trains. To answer, you can say something like "坐二号线，在人民广场站下车。" (Take Line 2 and get off at People's Square). You can keep the conversation going by reacting with something like "好的，谢谢您。" (Okay, thank you).