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.

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,

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