I will be departing and returning from different cities, more than 18 days apart. I once tried to book a return flight on Princess' EZ Air (that looks to be the same as Holland America's Flight Ease), a few weeks after I had booked the departure flight, but the system wouldn't let me without cancelling the departure flight I had already booked. This time, on HAL Flight Ease, I would like to get my departure flight booked first, and then work on my return flight later. Can I do that? And if so, how?