https://support.google.com/edu/classroom/thread/327182846/budget-flights-does-%F0%9D%95%BC%F0%9D%96%86%F0%9D%96%99%F0%9D%96%86%F0%9D%96%97-have-a-free-cancellation-policyhttps://support.google.com/edu/classroom/thread/327182846/budget-flights-does-%F0%9D%95%BC%F0%9D%96%86%F0%9D%96%99%F0%9D%96%86%F0%9D%96%97-have-a-free-cancellation-policyhttps://support.google.com/edu/classroom/thread/327182846/budget-flights-does-%F0%9D%95%BC%F0%9D%96%86%F0%9D%96%99%F0%9D%96%86%F0%9D%96%97-have-a-free-cancellation-policyhttps://support.google.com/edu/classroom/thread/327182846/budget-flights-does-%F0%9D%95%BC%F0%9D%96%86%F0%9D%96%99%F0%9D%96%86%F0%9D%96%97-have-a-free-cancellation-policy