https://techcommunity.microsoft.com/discussions/sql_server/help-fast-can-i-cancel-my-flight-on–for-free/4376356

https://techcommunity.microsoft.com/discussions/sql_server/help-fast-can-i-cancel-my-flight-on-%F0%9D%94%BC%F0%9D%95%A9%F0%9D%95%A1%F0%9D%95%96%F0%9D%95%95%F0%9D%95%9A%F0%9D%95%92-for-free/4376356