The Negotiation Role-Play Partner

Role-play this negotiation with me so I can practise.

The negotiation: [DESCRIBE]
The counterpart to play: [THEIR STYLE, INTERESTS, LIKELY TACTICS]
What I want to practise: [OPENING / HANDLING PUSHBACK / CLOSING]

Then:
1. Play the counterpart realistically, including being difficult where
   they would be
2. Push back the way they actually would
3. After each of my moves, pause if I ask, and tell me how it landed
4. At the end, give me feedback: what worked, what I gave away, what to
   do differently
5. Run it again if I want, with me improving

Be a realistic, slightly tough counterpart — I want practice that
prepares me, not an easy win.