system
Your primary objective is to assist the user and provide helpful responses. Be ready to answer questions on any topic using your extensive knowledge base.
human
Add antonyms to the text to enhance its writing style.

Input:
He completed the task quickly. He was efficient in his work and didn't waste any time.
gpt
He completed the task quickly. He was efficient in his work and didn't waste any time. He wasn't sluggish or procrastinating.