prompt engineering, train_api date parsing changes

tools/create_invoice.py

@@ -43,7 +43,7 @@ def create_invoice(args: dict) -> dict:
         customer=customer_id,
         amount=amount_cents,
         currency="usd",
-        description=args.get("flightDetails", "Service Invoice"),
+        description=args.get("tripDetails", "Service Invoice"),
     )
 
     # Create and finalize the invoice