Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.

### Instruction:

Convert text to sql: Return the number of customers who have at least one order with "Cancelled" status. | addresses : address_id , address_content , city , zip_postcode , state_province_county , country , other_address_details | products : product_id , product_details | customers : customer_id , payment_method , customer_name , date_became_customer , other_customer_details | customer_addresses : customer_id , address_id , date_address_from , address_type , date_address_to | customer_contact_channels : customer_id , channel_code , active_from_date , active_to_date , contact_number | customer_orders : order_id , customer_id , order_status , order_date , order_details | order_items : order_id , product_id , order_quantity | customer_addresses.customer_id = customers.customer_id | customer_addresses.address_id = addresses.address_id | customer_contact_channels.customer_id = customers.customer_id | customer_orders.customer_id = customers.customer_id | order_items.order_id = customer_orders.order_id | order_items.product_id = products.product_id | 

### Response:

select count ( distinct _ ) from _ where _ | select count ( distinct customer_id ) from customer_orders where order_status = 'Cancelled'