https://pressbooks.pub/travelplan/chapter/can-lap-infants-travel-in-lie-flat-seats-on-klm-airlines/
https://pressbooks.pub/travelplan/chapter/how-to-add-a-baby-to-a-business-or-first-class-ticket-klm-after-booking/
https://pressbooks.pub/infantnamechange/wp-admin/post.php?post=124&action=edit
https://pressbooks.pub/infantnamechange/chapter/can-i-upgrade-my-seat-with-an-infant-on-united-airlines/
https://pressbooks.pub/infantnamechange/chapter/how-to-add-a-lap-infant-or-baby-to-a-united-airlines-ticket/
https://pressbooks.pub/infantnamechange/chapter/how-to-reserve-a-bassinet-for-your-baby-on-a-united-airlines-flight/