Courrier-type en anglais - Remerciements pour invitation à un évènement commercial

Dear [Mr or Mrs or Sirs], I write to tell you how much I have appreciated your [événement] you invited me to on [date] at [lieu]. As I did not have the opportunity to meet you there, I want to express here all my thanks and congratulations. It was a very exciting and informative event, during which we have had the chance to [opportunités]. Much of our success is due to the remarkable organization of this [événement]. We look forward to attending your next [événement]. Yours sincerely [votre nom] [votre fonction]