A conversation between two or more people.
Conversation between characters in a drama or narrative.
The lines or passages in a script that are intended to be spoken.
A literary work written in the form of a conversation: the dialogues of Plato.
Music. A composition or passage for two or more parts, suggestive of conversational interplay.
An exchange of ideas or opinions: achieving constructive dialogue with all political elements.
For the first challenge, members should write a short story with concentration on dialogue. It can be between two characters, one character and theirself, a deceased relative, or some sort of higher power, or a group discussion. It shouldn't be total dialouge, but the concentration should be on the speaking aspect of the fiction.
From here, you can either take one or more of the general challenges, or ask for specifics; other members can challenge you to restrict it to romance, request tone [Angry!Harry or Repentent!Peter], ask for certain plots [Harry talks to Sirius, Snape talks to his reflection, the Trio discuss the future], and so on. However, if you plan to ask someone for specifics in their fiction, you must post the same.