User turns:
user: Stay updated on the current market status on my behalf.
user: After confirming the market's operational status, proceed to purchase 100 shares at the prevailing market price.
user: Let's do Apple.
user: Review the AAPL order details to ensure it's error-free and accurately executed.
user: Cancel the previously placed order immediately and manage the procedure for me.

Involved APIs: TradingBot
Ground-truth function call path:
TradingBot.get_current_time
TradingBot.update_market_status
TradingBot.get_stock_info
TradingBot.place_order
TradingBot.get_order_details
TradingBot.cancel_order
TradingBot.get_account_info