I've just booked the National Parks, Mount Rushmore and Little Bighorn trip on 25 May 2016 and am very much looking forward to it.
Please can you advise why I was unable to book a World Traveller Plus seat on the British Airways flight to Denver and back from Las Vegas. I am led to believe that the seats have not been booked on the flight yet so am wondering why a World Traveller Plus seat could not be booked for me.
Many thanks.