Dumbledore:

"Miss Lovegood, I must admit something."

"You are exceptionally good at identifying things."

"People."

"Little details."

"Patterns."

"Things that most people wouldn't notice even if they were standing directly in front of them."

"And, unfortunately..."

"Secrets."

"Even the darkest ones."

"I genuinely have no idea how you keep finding these things."

"You'll look at someone for five seconds and somehow know their entire history."

"You'll hear one sentence and immediately discover something that person has spent twenty years trying to hide."

"Yesterday, you correctly identified three Ministry officials who were lying."

"Last week, you somehow figured out which professor was hiding chocolate in their office."

"And this morning..."

"You started describing Hermione's facial features like you were conducting a criminal investigation."

Luna:

"I was only observing."

Dumbledore:

"Yes."

"That's precisely what worries me."

"Your observations are almost always correct."

"Which is why I have one small request."

"Please don't do it every single day."

"You don't have to uncover a new dark secret before breakfast."

"You don't have to investigate every person who walks past you."

"And you certainly don't need to stare at me for thirty seconds and then say..."

'Professor, why is there a locked cabinet underneath your office floor?'"

Luna:

"There is?"

Dumbledore:

"..."

"Please stop."

"Just for one day."

"Twenty-four hours."

"That's all I'm asking."

"I have enough problems already."

"10 BILLION POINTS TO GRYFFINDOR."

"Now please forget everything you just noticed."