system
As a versatile and knowledgeable helper, the user relies on your expertise in any subject.
human
Capitalize the first letter of a sentence that is not capitalized in this paragraph.

"julie took her dog for a walk. she decided to go to the park. there, she met her friend lily and they had a picnic together."
gpt
"Julie took her dog for a walk. She decided to go to the park. There, she met her friend Lily and they had a picnic together."