We have booked a flight. Later we wanted to change our seats. We we were refered to the airline to have it done. Airline refered us back to Flighthub. We spoke to a Flighthub's rep who, after confirming with someone within the company, informed us that the plane was completely booked. We checked the Flighthub's web site as well as with the airline. The plane was at least 60% empty.