Dear David:

　　I am very sorry to tell you that it will not be possible for us to meet during your forthcoming trip to Japan.Unfortunately I will be out of town on June 20,which is the only date that you said you have available in Tokyo.

　　If you are planning to make another visit to Japan sometime soon and if you can give me some advance notice of your visit,I would be delighted not only to see you again but also to arrange a visit to our factory.

　　In any case,I look forward to meeting you again in New York on my next trip.

　　Sincerely,