I initially was on Easyjet to book a flight for 2 people. However I needed more information from my partner and had to wait for her return. The problem was when I returned to the booking the system behaved differently and I ended up only booking one of the seats. I was not amused when I had to make another single booking that cost me approx. £50 more and to cancel and rebook would cost more. User's recommendation: Do not attempt to make a multiple booking if the person(s) need to inform you of their preferences.