Austin Parker,
1234, West 67 Street,
Carlisle, MA 01741,
Cell:-(123)-456 7890
[Subject: Normally bold, summarizes the intention of the letter] -Optional-
Dear Austin parker,
Unfortunately, I cannot push through with my request to meet with you this coming Friday at 2:00 p.m. to talk about my feasibility study. I was expecting that by today, Wednesday, all of the data from my sources could already be collated. I underestimated the time that it would take to gather concrete and in-depth information for this study. I will review this again, and once everything has been sorted out and finalized, I will call you and arrange for a meeting.
Sincerely,
Lisa parker