Get single booking by ID

{
    "_id": "456e7890-e89b-12d3-a456-426614174000",
    "name": "Q1 2024 Campaign",
    "code": "BOOK-2024-001",
    "isActive": true,
    "meta": {},
    "assetIds": [
        "987fcdeb-51a2-43d1-9f12-345678901234",
        "111fcdeb-51a2-43d1-9f12-345678901234"
    ],
    "startDate": "2024-01-01T00:00:00.000Z",
    "endDate": "2024-03-31T23:59:59.999Z",
    "status": "reserved",
    "campaignIds": [
        "789cde01-2345-67f8-9012-3456789abcde"
    ],
    "tradingPeriodIds": [
        "123e4567-e89b-12d3-a456-426614174000"
    ],
    "categoryFilters": {
        "123e4567-e89b-12d3-a456-426614174001": [
            "electronics",
            "fashion"
        ]
    },
    "unavailableAssetIds": [
        {
            "bookedAssetId": "111fcdeb-51a2-43d1-9f12-345678901234",
            "unavailableAssetId": "222fcdeb-51a2-43d1-9f12-345678901234"
        }
    ],
    "segmentationRuleId": "seg-rule-uuid-123",
    "campaignArtworkId": "artwork-uuid-456",
    "unavailableAssetStoreKeys": [
        "store-key-001",
        "store-key-002"
    ],
    "creator": {
        "_id": "user-creator-uuid",
        "firstName": "John",
        "lastName": "Doe",
        "email": "john.doe@example.com"
    },
    "owners": [
        {
            "_id": "user-owner-uuid-1",
            "firstName": "Jane",
            "lastName": "Smith",
            "email": "jane.smith@example.com"
        },
        {
            "_id": "user-owner-uuid-2",
            "firstName": "Bob",
            "lastName": "Johnson",
            "email": "bob.johnson@example.com"
        }
    ],
    "opportunityId": "550e8400-e29b-41d4-a716-446655440000",
    "advertiserId": "550e8400-e29b-41d4-a716-446655440001",
    "opportunityTierId": "550e8400-e29b-41d4-a716-446655440002",
    "createdAt": "2024-01-01T10:00:00.000Z",
    "updatedAt": "2024-01-01T10:00:00.000Z",
    "updates": [
        {
            "_id": "update-uuid-1",
            "bookingId": "456e7890-e89b-12d3-a456-426614174000",
            "area": "assets",
            "assetsIdsToUse": [
                "987fcdeb-51a2-43d1-9f12-345678901234"
            ],
            "seenBy": [
                "user-uuid-1"
            ],
            "createdAt": "2024-01-01T10:30:00.000Z"
        }
    ]
}