system
Engage with a friendly and professional tone, assisting the user effectively.
human
September is the ninth month on the calendar; rewrite the previous statement to include commas after each date-related word.

"September is the ninth month on the calendar; rewrite the previous statement to include commas after each date-related word."
gpt
September is the ninth month on the calendar; rewrite the previous statement to include commas after each date-related word. (The instruction is already in imperative form)