https://www.devex.com/people/guide-to-adding-an-infant-to-your-delta-airlines-flight-reservation-2383359
https://www.devex.com/people/how-to-include-a-baby-in-your-delta-airlines-airlines-economy-2383394
https://www.devex.com/people/what-to-know-when-adding-a-baby-to-a-southwest-first-class-flight-2383218
https://www.devex.com/people/can-i-add-an-infant-to-my-southwest-airlines-first-class-booking-2383162
https://www.devex.com/people/how-to-ensure-my-baby-is-included-on-my-southwest-airlines-business-class-2383186