import pandas as pd


orders = pd.DataFrame(
    {
        "order_id": ["1001", "1002", "BAD", "1004"],
        "ordered_at": ["2026-06-01", "2026-06-02", "not a date", "2026-06-04"],
        "quantity": ["2", "5", "", "3"],
        "paid": ["true", "false", "true", "false"],
        "region": ["EMEA", "APAC", "EMEA", "AMER"],
    }
)

converted = orders.copy()