I dreamed I was the last person on a hospital rooftop

It was raining, but not wet — more like static falling through the air. The ICU windows were all dark, but I could hear voices from inside, muffled and looping, like old voicemails. I stood at the edge, not afraid of falling, just waiting for someone to come up and say something real. No one did. When I woke, my hands were cold. Not from the dream. From the silence after someone says 'I'm fine.'