Continue writing the next sentence in this paragraph:

How to write dialogue
Pay attention to actual conversations.
Listen to the way people talk to one another and use those conversations and patterns in your dialogue to make it sound authentic. You'll notice that people talk differently when they're with different people, so make sure that you include that when you're writing dialogue.
Disregard parts of the conversation that will not translate well when written down. For example, every " hello " and " goodbye " does not need to be written.