Subject: Cancellation and Rescheduling of Appointment — [Your Name] [Your Name] [Your Address] [City, State, ZIP] [Email Address] [Phone Number] [Date] [Recipient's Name] [Recipient's Position] [Company/Organization Name] [Address] [City, State, ZIP] Dear [Recipient's Name], I hope this letter finds you in good health. I am writing to inform you that, unfortunately, I am unable to keep my scheduled appointment with you on [appointment date]. I apologize for any inconvenience this may cause. Due to unforeseen circumstances, such as [mention the reason], I am respectfully requesting the cancellation and rescheduling of our appointment. I highly value your time and expertise, and I regret any disruption caused by this change. I kindly request to reschedule the appointment to a date and time that is convenient for both of us. Furthermore, I propose the following alternatives: [provide a few possible dates and times]. Please let me know the most suitable option for you, and I will do my best to accommodate. Should none of the suggested options work for you, please inform me of an appropriate time through your preferred method of contact. I am flexible and open to finding an agreeable meeting time. I assure you that the reason for rescheduling is of utmost significance, and I regard our appointment as a top priority. Furthermore, I value your expertise and look forward to the opportunity to meet with you and discuss [mention the purpose/subject of the appointment]. Once again, I apologize for any inconvenience caused by this rescheduling request. I appreciate your understanding and cooperation in this matter. If you have any questions or require any further details, please do not hesitate to contact me. Thank you for your attention to this matter, and I appreciate your prompt response. I am confident that we can find a suitable alternative that accommodates both parties involved. Sincerely, [Your Name]