dialogue

(noun) a conversation between two persons. Synonyms: dialog, duologue.

(noun) the lines spoken by characters in drama or fiction. Synonyms: dialog.

(noun) a literary composition in the form of a conversation between two people. Synonyms: dialog. Example: "He has read plato's dialogues in the original greek."

(noun) a discussion intended to produce an agreement. Synonyms: negotiation, talks. Examples: "The buyout negotiation lasted several days." "They disagreed but kept an open dialogue." "Talks between israelis and palestinians."