Answer:

DIALOG

Answer	Crossword Clue
DIALOG	Conversation
DIALOG	Parley
DIALOG	Lines on the stage

DIALOG	Play exchange
DIALOG	Most of a screenplay
DIALOG	Conversation in a screenplay
DIALOG	Exchange between players
DIALOG	Back-and-forth talk
DIALOG	Theatrical talk.
DIALOG	Conversation.
DIALOG	Scripts, mostly

DIALOG	Kind of box
DIALOG	Some back-and-forth, briefly
DIALOG	Screenplay element
DIALOG	It's open for discussion
DIALOG	Kind of box for input
DIALOG	... box (computer screen pop-up)
DIALOG	Series of talks
DIALOG	Short conversation?

DIALOG	Meaningful talk
DIALOG	Theatrical talk
DIALOG	It's open for discussion (Var.)
DIALOG	Theatrical talk (var.)
DIALOG	Lines on the stage (var.)
DIALOG	Meaningful talk (var.)
DIALOG	Talk-show talk
DIALOG	Lines at the theater

DIALOG	Desktop pop-up
DIALOG	Lines at the movies
DIALOG	... box (computer prompt)
DIALOG	Exchange of words