Final answer:
In the letter, the student expresses apologies for being unable to attend an event on February 23, 2018, due to prior work commitments and respectfully requests understanding while expressing regret over the situation.
Step-by-step explanation:
Dear Mrs. Radway,
I hope this message finds you well. I am writing to express my sincere apologies, as I will not be able to attend the event you invited me to on February 23, 2018. Due to a prior commitment involving my work, I am unable to be present on that particular date. On that day, I will be engaged in important tasks that require my immediate attention and presence. I hope you understand that this decision was not made lightly and I deeply regret not being able to partake in this occasion.
Given these circumstances, I respectfully request your understanding. Please extend my apologies to the other attendees and anyone else affected by my absence. I appreciate the invitation and hope that the event is a great success.
Thank you for considering my situation. I hope to have the opportunity to participate in future events and look forward to staying in touch.
Warm regards,
[Your Name]