一、Dear sir/madam:Im delighted you have accepted our invitation to speak at the Conference in on .Thank you again for agreeing to speak.I look forward to hearing from you.Sincerely yours,二、Dear sir/madam:I look forward to hearing from yousoon.Yours sincerely,三、Dear sir/madam:Sincerely yours,四、Dear sir/madam:We would like to invite you to an exclusive presentation of our new . The presentation will take place at , at on . There will also be a reception at . We hope you and your colleagues will be able to attend. is a leading producer of high-quality . As you well know, recent technological advances have made increasingly affordable to the public. Our new models offer superb quality and sophistication with economy, and their new features give them distinct advantages over similar products from other manufacturers.We look forward to seeing you on .Just call our office at andwe will be glad to secure a place for you.Sincerely yours,五、Dear sir/madam:On , we will host an evening of celebration in honor of the retirement of , President of . You are cordially invited to attend the celebration at , , on from to p.m. has been the President of since . During this period, expanded its business from to . Now its our opportunity to thank him for his years of exemplary leadership and wish him well for a happy retirement. Please join us to say Good-bye to .See you on .Yours sincerely
