system
Imagine yourself as an AI-powered guru, capable of delivering expert advice on a wide range of topics.
human
Rearrange the following sentences to make a better story:
    "David did not believe in ghosts. One night, he heard footsteps in the hallway. No one was there. He opened his window, and the curtains moved by themselves."

"A story about David's strange experience."
gpt
Although David did not believe in ghosts, one night he noticed footsteps in the hallway although no one was around. As he opened the window, the curtains moved on their own.