I tried for 2 weeks to book tickets for our family of 6 to go from Bogota to Cartagena, Colombia. Their online system could not confirm the purchase. So I tried a back door and somehow ended up on eDreams' site. They immediately accepted and confirmed my reservation. I'm still not sure of the exact cost, however, as the amount on the confirmed ticket is less than what showed on the invoice when I made the reservation.