Annulation de réunion

Dear [Mr or Mrs or Sirs], I am very sorry to inform you that I have to cancel [événement] I had invited you to on [date] at [lieu]. This is because [motifs]. I apologize for the inconvenience it may cause you and trust you will appreciate the circumstances. I shall try to re-schedule this [événement] later in the year and shall be in touch with you to inform you of the date and location. I do hope to have the opportunity to meet you then. Yours sincerely [votre nom] [votre fonction]