讲义
A: Miss. I have a lower back pain. May I have one more blanket and two more pillows?
B: Sure. Here you are.
A: Thank you. By the way, would you show me how to turn on the reading light?
B: OK. All the buttons are on the seat arm. See, this one with a picture of a light bulb is for the light. That one with a picture of a girl is service button. All the buttons have pictures on them. You won’t mix them up.