[
  {
    "id": 1,
    "customer": "Alice",
    "items": [
      {"name": "Laptop", "price": 1000, "quantity": 1},
      {"name": "Mouse", "price": 50, "quantity": 2}
    ],
    "total_price": 0
  },
  {
    "id": 2,
    "customer": "Bob",
    "items": [
      {"name": "Keyboard", "price": 80, "quantity": 1},
      {"name": "Mouse", "price": 50, "quantity": 1}
    ],
    "total_price": 0
  },
  {
    "id": 3,
    "customer": "Alice",
    "items": [
      {"name": "Monitor", "price": 300, "quantity": 2}
    ],
    "total_price": 0
  }
]