Dear Mr. Brooke,
I am writing to apologize for breaking the glass of your last week. I am so sorry. I am extremely embarrassed about my behavior and I accept full responsibility for what happened.
The incident. occurred in the morning as I was at your table. My intention was to put it on your desk. But unfortunately it has been robbed of your glass.
My parents have offered to help me pay for the broken windscreen, and so I would be grateful if you could inform me of the appropriate amount when I see you on Monday. Once again, please accept my apologies for the inconvenience I have caused.
Yours sincerely
Thuwanon Baiya