Function: cancel_order
Description: This tool belongs to the trading system, which allows users to trade stocks, manage their account, and view stock information. Tool description: Cancel an order.
Parameters:
type: dict
properties: order_id: type: integer
description: ID of the order to cancel. 
required: order_id
Response:
type: dict
properties: order_id: type: integer
description: ID of the cancelled order.
status: type: string
description: New status of the order after cancellation attempt.