I was the last person on Earth who still answered the radio

I stood in the control tower, not because I had to, but because the silence after 'clear for descent' used to mean something. The sky was empty, but I kept calling out—'Cleopatra Seven-Three, cleared for final approach.' And then, a whisper: 'Roger, Cleo. I'm here.' I turned around. No one. Just the hum of the old console and the way the light from the window fell across the floor like it was waiting for a plane that never came.