Multi-turn user requests:
user: I've just realized it's a hectic morning, and I know the stock market updates its status at different points throughout the day. Since it's barely past 10:30 AM, enlighten me: is the market buzzing with activity at this moment?
user: Today feels like the right day to make a strategic move since the market is showing signs of life. I'm on the lookout for a stock I recently caught wind of. Would you mind arranging for me to acquire a hefty slice—say, 100 shares of the company with symbol AAPL at the prevailing market price? This could really spice up my current portfolio.
user: Once you've set up the order, I'd really appreciate if you could confirm some specifics. Could you kindly fetch the particulars of the last order I placed? I need to see if it aligns with my vision before I take another step forward.
user: You know, I've had a change of heart regarding my approach, and I've decided to back off from this particular order right now. Would you be so kind to annul the latest order I put in, since it's still pending?

Tools involved: TradingBot
MathAPI
Expected function-call sequence: TradingBot.update_market_status
TradingBot.get_stock_info
TradingBot.place_order
TradingBot.get_order_details
TradingBot.cancel_order
TradingBot.get_account_info
MathAPI.mean