Hello - Trying to book airfare for a trip that I'll be taking my 1 year old son on. I'd like to book an actual seat so I can put him in his car seat, however, it doesn't seem to allow me to pick the over 2 years old child option for him. Does anyone have experience booking a seat for an infant? Might just call them in the morning, but was hoping to take care of this tonight still. Thanks!