I asked my parents for leave because I couldn't go home during the winter vacation.

Mom and Dad: I can't tell you how sorry I am! I know you are looking forward to my coming home, and I also want to spend a warm Spring Festival with you. But because of {{reasons, I can't go back in the winter vacation. Please forgive me. Sorry to disappoint you, parents. . . . Although we can't meet, we can talk on the phone every day. . . . . . . . . . . You can add some content yourself.