Dear xxx:
I am really to interrupt you,but do you remember the dinner together next friday and we the contract we were going to talk about?Well,I was really looking forward,but we need to postpone it regarding a business trip to India.
Is it possible for you to alter your schedule so we can meet at the beginning of the next month?I understand it may be a hard decision to make.If you can not decide right now,we can discuss if after my trip.
I must apologize again for the change of my schedule.Please don't hold it against me,because I do hope for future cooperation with your company.
Thanks for your understanding.
sinuously
Your name