Following days of chaos at Dubai International Airport, the head of Emirates Airline has published an open letter, offering his “most sincere apologies to every customer who has had their travel plans disrupted”. Severe and unprecedented flooding has caused more than 1,000 flight cancellations, with hundreds of thousands passengers stranded. Many other arrivals and departures to and from the airport have been hit by diversions and long delays. Emirates is the largest airline to fly from the hub and its president, Sir Tim Clark, wrote: “We know our response has been far from perfect. We acknowl…