https://support.xilinx.com/s/question/0D54U00008ahgxgSAA/connect-18555500607-what-is-aeromexico–cancellation-policy

https://support.xilinx.com/s/question/0D54U00008ahgxgSAA/connect-18555500607-what-is-aeromexico-%F0%9D%95%97%F0%9D%95%9D%F0%9D%95%9A%F0%9D%95%98%F0%9D%95%99%F0%9D%95%A5-cancellation-policy