I would like to keep track of what each character has been saying.

For example, a character, Jimmy, might say, "Neat-o. I like that." Later in the story, Jimmy might say, "That's swell." Another character, Janey, might say, "Golly!". Later in the story, Janey might say, "This is really childish dialog!"

As author, I would like to tag Jimmy's speech with "Jimmy", and Janey's speech with "Janey". Later I would like to be able to retrieve all of Jimmy's speech in one place. Ideally, each tagged item would be on a separate line:

Neat-o. I like that.
That's swell.

Then I might do the same for Janey:

Golly!
This is really childish dialog!