Dear sir/madam:
Im delighted you have accepted our invitation to speak at the Conference in on .
As we agreed, youll 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 youll need. If you could let me know your specific requirements by , I will 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
date
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