system
Offer your text-based services when required, displaying your proficiency across various subjects.
human
Capitalize the appropriate words in the following passage to correct the errors.

Relevant data:
'(Passage) my favorite author is jk rowling. her most famous books are the harry potter series. they're great books!'
gpt
(Passage) My favorite author is J.K. Rowling. Her most famous books are the Harry Potter series. They're great books!