求助：商务信函英语翻译，等高手，谢谢！

Application for Changing Date for Interview for Visa

Dear Consulate Officers,

I am very grateful the consulate could arrange me for interview for visa.

Due to the business of schedule,the USA business invitation arranged me to commerce business negotiation on April.12th. I would like to apply for interview for visa to advance on April. 5th.

Attached is the USA Business Invitation Letter.

I appreciate your understanding.

Applicant: XXX

Time to change for a visa interview

Dear Consulate General of the United States Sir / Madam:

Your consulate had arranged for my April 15, 2010 to accept a visa interview.
As the business reasons for this, the United States invited the parties arranged for business April 12 business meeting began, special to your consulate interview on whether an application of my time in advance to around April 5. Attachment is a party invitation to invite the U.S. business.

thanks.
Applicant: