How To Write Great Dialogue -- 1. Dialogue should move a plot forward. ‘Let’s go.’ is better than ‘Peter said that they should go.’ 2. Dialogue should reveal character. Every word your character uses shows the sort of person he or she is. 3. Dialogue should provide information. Treat this one with care. There is a fine line between revealing important facts and boring the reader with details. Do not allow your characters to ‘tell’ in dialogue. Rather use a short summary.