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　　(1)

　　Dear sir/madam:

I’m delighted you have accepted our invitation to speak at the Conference in on . As we agreed, you’ll be speaking on the topic "" from to . There will be an additional minutes for questions.

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Would you please tell me what kind of audio-visual equipment you’ll need. If you could let me know your specific requirements by , I’ll have plenty of time to make sure that the hotel provides you with what you need.

Thank you again for agreeing to speak. I look forward to hearing from you.

Sincerely yours,

　　(2)

　　Dear sir/madam:

Thank you for your letter of . I’m glad that you are also going to next month. It would be a great pleasure to meet you at the .

Our company is having a reception at on the evening of and I would be very pleased if you could attend.

I look forward to hearing from you soon.

Yours sincerely,

　　(3)

　　Dear sir/madam:

would very much like to have someone from your company speak at our conference on .

As you may be aware, the mission of our association is to promote . Many of our members are interested in the achievements your company has made in .

Enclosed is our preliminary schedule for the conference which will be reviewed in weeks. I’ll call you to see who from your company would be willing to speak to us. I can assure you that we’ll make everything convenient to the speaker.

Sincerely yours,

　　(4)

　　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