Subject: [Conference/Symposium Name]: Your Confirmation Requested Dear [Guest's Name], I hope this letter finds you in good health and high spirits. I am writing to confirm your invitation as a guest speaker at the upcoming [Conference/Symposium Name], taking place in [City, Illinois] from [date] to [date]. Your expertise and contribution to the field [specific field] make your presence an invaluable addition to the event. The organizers and attendees are eagerly anticipating your insightful presentation on [Presentation Title]. Your extensive experience in [specific topic/area] and your profound knowledge are certain to enlighten and inspire our audience. We believe that your presence will provide a unique perspective and generate productive discussions amongst fellow industry experts. We kindly request your commitment to attending the [Conference/Symposium Name]. Your attendance at the event will be highly regarded, not only by the organizing committee but also by the attendees eager to learn from your expertise. Should you be unable to attend for any reason, kindly notify us as soon as possible, so we can make necessary arrangements. The schedule for your presentation is as follows: Date: [Presentation Date] Time: [Presentation Time] Venue: [Presentation Venue] Please note that we have reserved a slot of [duration] for your presentation. It is essential that you adhere to the specified timing to allow for smooth transitions between speakers and ensure maximum engagement with our audience. In addition to your presentation, we encourage you to participate in the various networking sessions, panel discussions, and workshops that will take place during the event. These interactions provide an excellent opportunity to exchange ideas, connect with fellow experts, and foster collaborations within the [specific field]. We kindly request that you provide us with your updated professional biography and a high-resolution photograph for promotional purposes. This information will be used to introduce you to the audience and promote your participation in our event. Please find attached a detailed event schedule, including the topics, times, and locations of all sessions and activities. If you require any additional information or have specific requirements, please do not hesitate to contact our event coordinator, [Coordinator's Name], at [Coordinator's Email] or [Coordinator's Phone Number]. They will be happy to assist you in any way possible. Once again, we express our gratitude for accepting our invitation to be part of the [Conference/Symposium Name]. Your distinguished presence and valuable insights will undoubtedly contribute to the success of the event and elevate its impact on the industry. We eagerly await your confirmation of attendance by [Confirmation Date]. We are honored to have you and look forward to welcoming you to the vibrant city of [City, Illinois] for this exciting knowledge-sharing event. Thank you for your time and consideration. Warm regards, [Your Name] [Your Title/Organization] [Contact Information: Email and Phone Number]