With dialogue, specific punctuation is needed. Most often, commas and periods go within the quotation marks, but there are some forms of punctuation and examples that go outside of the quotation marks ...

U.S. Secretary of State Marco Rubio and China's Foreign Minister Wang Yi had a phone call, marking the first official contact between their governments under President Trump's administration. They ...

Narrator: This is the opening scene of "The Social Network." And this is what that dialogue looks like in a graph. Mark: You don't have to study. Erica: Why do you keep saying I don't have to study?!