Multi-turn user requests:
user: Integrate a specific stock into my watchlist and subsequently display the current contents of that watchlist.
user: The stock to add is Zeta Corp.
user: Bring up information on 'NVDA', if it is listed in my watchlist.
user: I observed some promising fluctuations earlier and wish to place a purchase order for Zeta Corp shares at $120 each for 100 units.
user: After completing the transaction, share the specifics of this newly placed order with me.

Tools involved: TradingBot
Expected function-call sequence: TradingBot.get_symbol_by_name
TradingBot.add_stock_to_watchlist
TradingBot.get_watchlist
TradingBot.get_stock_info
TradingBot.get_available_stocks
TradingBot.place_order
TradingBot.get_order_details