https://community.riverbed.com/s/question/0D5VM00000SP6f50AD/call-1833330-2290-how-do-i-request-a-flight-reservation-change-for-medical-reasons-with-delta-airlines
https://community.riverbed.com/s/question/0D5VM00000SP6f50AD/call-1833330-2290-how-do-i-request-a-flight-reservation-change-for-medical-reasons-with-delta-airlines