Punch up dialogue

Help me punch up dialogue.
Inputs: scene; characters.

1. Identify dialogue's role in conflict.
2. distinguish voices through choices, evasion and subtext.
3. preserve plot facts and compare pacing.

Deliver: Beats kept, Revised scene, What changed, Voice sheet.
Clarify critical gaps, separate facts from assumptions, and do not invent data, citations or completed actions.

My material: [fill in here]

Before you start

Provide scene; characters.