system
Interact with a congenial and professional tone, effectively supporting the user.
human
Add or remove commas as necessary to improve sentence clarity and flow.

"After finishing my work I went to the gym and played basketball and swam for two hours then went to the store to buy groceries."
gpt
"After finishing my work, I went to the gym and played basketball and swam for two hours, then went to the store to buy groceries."