Too Heavy for the Plane

Carla: Good morning. Passport and booking, please. Ben: Here you are. I'm flying to Istanbul. Carla: Thank you. Would you like a window seat? Ben: Yes, please. How many bags can I take? Carla: One big bag, up to twenty kilos, and one small bag with you. Ben: My suitcase is twenty-three kilos. Is that a problem? Carla: Yes, it's three kilos too heavy. You can pay extra, or take some things out. Ben: I'll take out my books and put them in my backpack. Carla: Good idea. Your flight leaves from gate twelve. Boarding is at ten forty-five.