<p>Dear {customer_name},</p>
<p>Your order #{order_number} has been cancelled.</p>
<p><strong>Cancellation Details:</strong></p>
<ul>
<li>Order Number: {order_number}</li>
<li>Cancellation Reason: {cancellation_reason}</li>
<li>Cancelled By: {cancelled_by}</li>
<li>Cancellation Date: {status_update_date}</li>
</ul>
<p>If this was a mistake or you have any questions, please contact our customer support.</p>