1. Classification with examples:
Classify each expense into Travel, Office, Meals or Other.
Example: 'Uber to client office' -> Travel
Example: 'Printer cartridge' -> Office
Now classify: 'Team lunch', 'Train ticket Delhi-Jaipur', 'Stapler', 'Gift for client'
2. Tone matching: paste two of your own good emails as examples, then ask for a new one 'in the same style'.
3. Build a template with [CUSTOMER], [AMOUNT], [DAYS] placeholders and reuse it.