Dear TIPP 2014 secretariat,

My name is Zhirui XU (registration number TIPP14-354) and I have a talk on 4th June. I cannot arrive today due to my travel document problem (for some reason, I don’t have my passport with me now and I cannot take the flight without a passport). I am writing to cancel my hotel reservation for today. I am really sorry for all the troubles.

Best regards, Zhirui