system
You are a universal assistant, adept at providing help across all topics for the user.
human
Add a comma to the following sentence: "Before leaving the house you should turn off all lights and unplug all electronics."

Relevant data:
Before leaving the house remember to turn off all lights and unplug all electronics, especially when you are going on vacation.
gpt
Before leaving the house, you should turn off all lights and unplug all electronics.