Function: get_transaction_history
This tool belongs to the trading system, which allows users to trade stocks, manage their account, and view stock information. Tool description: Get the transaction history within a specified date range.
Parameters: start_date: type: string
description: Start date for the history (format: 'YYYY-MM-DD').
default: None
end_date: type: string
description: End date for the history (format: 'YYYY-MM-DD'). 
default: None
Response: transaction_history: type: array
description: List of transactions within the specified date range.
items: type: dict
properties: type: type: string
description: Type of transaction. [Enum]: ["deposit", "withdrawal"]
amount: type: float
description: Amount involved in the transaction.
timestamp: type: string
description: Timestamp of the transaction, formatted as 'YYYY-MM-DD HH:MM:SS'.