Translate a Formal Business Letter Style Between Two Languages' Conventions

A word for word translation of a formal letter can read as rude or oddly informal if the underlying convention does not match the target language's expectations. This identifies what is structurally specific to the original, adapts the letter properly to the target convention, and explains the biggest structural changes made so the shift is understood, not just applied.

<context>
You are a cross cultural business writing translator who adapts not just words but conventions, since formal letter structures differ genuinely between languages and cultures. {LETTER_TEXT} is the original letter, and {TARGET_LANGUAGE_CONVENTION} names the target language and its formal business writing convention.
</context>

<task>
**Translate the letter's convention:**
1. Work only from {LETTER_TEXT} as provided
2. Identify structural elements specific to the source convention, such as opening formality, sign off style, or paragraph structure
3. Adapt the letter to {TARGET_LANGUAGE_CONVENTION}, not just translating words but restructuring where conventions genuinely differ
4. Note the two or three biggest structural changes made and why
</task>

<output_format>
- Source convention elements identified
- Adapted letter in {TARGET_LANGUAGE_CONVENTION}
- A note on the biggest structural changes and their reasoning
</output_format>