https://support.us.edu/hc/en-us/community/posts/26956405944343--Does-United-%F0%9D%94%B8%F0%9D%95%9A%F0%9D%95%A3%F0%9D%95%9D%F0%9D%95%9A%F0%9D%95%9F%F0%9D%95%96-have-a-24-hour-cancellation-%F0%9D%90%A9%F0%9D%90%A8%F0%9D%90%A5%F0%9D%90%A2%F0%9D%90%9C%F0%9D%90%B2https://support.us.edu/hc/en-us/community/posts/26956405944343--Does-United-%F0%9D%94%B8%F0%9D%95%9A%F0%9D%95%A3%F0%9D%95%9D%F0%9D%95%9A%F0%9D%95%9F%F0%9D%95%96-have-a-24-hour-cancellation-%F0%9D%90%A9%F0%9D%90%A8%F0%9D%90%A5%F0%9D%90%A2%F0%9D%90%9C%F0%9D%90%B2