I hope this email finds you well. My name is Kyung Yul Lee, and I am scheduled to present a paper at the upcoming DRUID Lisbon conference. I had planned to attend the conference by adjusting my class schedule; however, I regret to inform you that I am now facing difficulties in modifying it.

I sincerely apologize for the inconvenience caused by this unexpected situation. Despite having carefully arranged my schedule in advance, I deeply regret that I am unable to attend the conference as planned, causing disruptions to the overall schedule.

Considering the circumstances, I wanted to inquire if it would be possible to request a refund of the conference fee. I understand that this may pose certain challenges, but I wanted to explore the possibility of receiving a refund for at least a portion of the amount paid. I genuinely regret any inconvenience or additional workload this may cause, and I assure you that it was not my intention to cause any disruption.

I highly appreciate your understanding and assistance regarding this matter. If there are any additional steps or procedures I need to follow, please do not hesitate to let me know. I am open to any suggestions or alternative solutions that could help resolve this situation.

Once again, I apologize for any confusion or inconvenience caused, and I appreciate your attention to this matter. I look forward to your favorable response.

Thank you for your kind cooperation.

Best regards,

Kyung Yul Lee