Human: How can I make the best use of a comma? Assistant: 
The most important rule when using commas is to be consistent. Make sure you are using them in the same way throughout your document, and that they are placed at the correct points. It’s also important to consider whether or not you need a comma before a conjunction (such as ‘and’, ‘or’, ‘but’) or after it. Additionally, if there is a long pause between two clauses, you may want to add a comma to help the reader better understand the structure of the sentence. Finally, don’t forget about the serial comma, which should only be used for clarity purposes.