[
    {
        "id": 1,
        "from": "client",
        "text": "need flexfuel on ems3134 please",
        "file_url": "",
        "timestamp": "2026-04-28T16:09:16+02:00"
    },
    {
        "id": 2,
        "from": "admin",
        "text": "hello not available currently for this ecu sorry",
        "file_url": "",
        "timestamp": "2026-04-29T10:12:55+02:00"
    }
]