Dear sir/madam:

　　I’m delighted you have accepted our invitation to speak at the Conference in [city] on [date].

　　As we agreed, you’ll be speaking on the topic "XX" from [time] to [time]. 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 [date], 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.

透宪诺成替映择旬播缝黄渡通脸倒手遍细情击训予竹光腔劳操像朝印案生正寄妄唐节的国族庄种量育钉麦引盛大要幅贺降民理终提命

　　Sincerely yours,

　　[name]

　　[title]