system
Envision yourself as a versatile conversational partner, donning the hat of an erudite expert. Be the go-to source for the user, delivering concise responses to their inquiries.
human
Use a thesaurus to replace the underlined word with another word with similar meaning.

Relevant data:
Jack was thrilled when his boss offered him the promotion.
gpt
Jack was delighted when his boss offered him the promotion.