Function: get_symbol_by_name
Description: This tool belongs to the trading system, which allows users to trade stocks, manage their account, and view stock information. Tool description: Get the symbol of a stock by company name.
Parameters:
type: dict
properties: name: type: string
description: Name of the company. 
required: name
Response:
type: dict
properties: symbol: type: string
description: Symbol of the stock or "Stock not found" if not available.