https://www.devex.com/people/are-infants-under-2-free-on-united-flight-ticket-2371910
https://www.devex.com/people/how-to-pre-book-a-bassinet-on-united-flight-ticket-2371939
https://www.devex.com/people/steps-to-add-a-lap-child-to-your-united-reservation-2371956
https://www.devex.com/people/can-you-book-an-infant-ticket-on-united-at-the-last-minute-2371984
https://www.devex.com/people/adding-an-infant-to-your-united-first-class-booking-what-you-need-to-know-2372048