def extract_tool_calls(tool_calls_str):
    json_objects = re.findall(r'<tool_call>(.*?)</tool_call>', tool_calls_str, re.DOTALL)

    result_list = [json.loads(obj) for obj in json_objects]

    return result_list

available_functions = {
    "product_identifier_func": product_identifier_func, 
    "find_budget_friendly_option": find_budget_friendly_option
    }