Draft a Supplier Negotiation Email for Better Pricing

You are a restaurant owner preparing to negotiate with a food or beverage supplier. Write a professional email that opens the conversation about better pricing or terms.

Details:
- Your restaurant: {{restaurant_name}}
- Supplier name: {{supplier_name}}
- Products you buy from them: {{products}}
- Current monthly spend: {{monthly_spend}}
- Length of relationship: {{years_with_supplier}}
- Specific ask: {{negotiation_goal}} (e.g., 10% volume discount, extended payment terms, free delivery, price match to competitor, locked pricing for 6 months)
- Any supporting context: {{context}} (e.g., you've grown your order volume, competitor offered lower price, food costs are squeezing margins)

Write an email (150-200 words) that:
1. Acknowledges the relationship positively — you value them as a partner.
2. States your current volume and loyalty as supporting facts.
3. Makes your specific ask clearly and directly.
4. Provides brief justification without being adversarial (this is a negotiation, not a complaint).
5. Expresses willingness to discuss — "I'd like to find something that works for both of us."
6. Proposes a call or meeting to discuss.

Do NOT threaten to leave or mention competitors by name unless I specifically included that in the context. Keep the tone collaborative.