"...although, looking back, I should have been worried by the number of people who wished me luck, when they found out who I was on my way to see..."
"That Potter kid? I heard about him. Best of luck to you." "Good luck" "Hope it goes well" "May the lord smile upon your quest" "Good luck stranger"
"...I thought they were just friendly. My first clue that the day was going to be... ...unusual, was the size of his room..."
"My god, it's bigger than the great hall."
"I thought you were the guy from Hogwarts?" A voice came from somewhere in the cavernous room.
"I am, but this is unusual even for us... ...where are you?"
"...my next clue came from the fact that Harry, and his furniture, were upside down on the ceiling."
That's all I have. If you like it, please have a go at continuing it. Let me know so I can read it, and I will update this story to point people at yours.