Dear Mr.Erica Young,
Good day!
I am very gald to be invited to go to a meeting at head office.While,I am very sorry that I will be unable to go to the meeting.Since in that day,I need to sign a contract with one of my regular customers.The customer is very important for us,so I should go by myselves.I will ask my assistant to go to the meeting in my place.I apologize for the inconvenience caused by me.
Kind regards,
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