Your friend is coming next month but you have some urgent work and hence you cannot receive him her at the airport Write a letter to your friend In your letter Apologize to him her Explain the situation Suggest for arrangements

Hi Selena,
I was informed that you are coming next month. I can not wait to see you again after all those years. However, I can not pick you up at the air port as we planned, so I am very sorry. I have urgent stuff to finish at my hospital. The board organized an English course for employees, which starts tomorrow. After one-month studying, I will have a test that it occurs on the time you arrive in Vietnam. It has been a long time since we last met because of the pandemic. Therefore, we will catch up on the day after you come, is that ok?
Stay safe!
Angelina.