Student or Learner
I'd like to know if this is a correct beginning for a letter confirming the cancellation of a booking:
Dear Mrs Smith:
With regard to your phone call this evening, I am writing to reconfirm the cancellation of your booking.
This letter confirms the cancellation of your booking for 1-3 June.
You may want to add something about hoping you'll be able to meet their needs in the future.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.