To: Mr. John Brown
Date: March 15th, 2010
Dear Mr. John Brown, (generally the correct way to write it is given name and family name Write them all)
Well received you letter on March 12. We're hornered to invite you vist our company for discussing collaboration details, if you're available on 25th this month, please advise your flight informations, my collegue Ms. Lee will pick you up at the airport accordingly.
Look forward to seeing you soon.
Best Regards,
XXX