Here's why:
* Clarity: Starting a new paragraph makes it clear to the reader that a new speaker is being introduced.
* Visual Break: The visual break between paragraphs helps to separate the dialogue from the surrounding narrative.
* Emphasis: It adds emphasis to the dialogue and highlights its importance in the scene.
Example:
"Are you coming to the party tonight?" she asked.
"I don't know yet," I replied. "I have a lot of work to do."
"Come on, it'll be fun!" she insisted. "You can't stay cooped up in your room all night!"
Note: If the dialogue is a continuation of a previous speaker's turn, you can continue the dialogue within the same paragraph.
Example:
"Are you coming to the party tonight?" she asked.
"I don't know yet," I replied. "I have a lot of work to do."
"Come on, it'll be fun!" she insisted. "You can't stay cooped up in your room all night!"