Hi Phiruporn
This is the final speaking. If you can't go, you should have very good reason. I will send your request to the committee and to the registrar. I am sure they will check and I am very sure they will NOT allow you. This subject does not have written final exam. This means that according to the rules and regulations of the university, the exams should be held 2 to 3 weeks earlier. We have two exams. This further means that we can NOT postpone.
Jonathan