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.

唐甘留氧乔条测菜说柳孙治贝森为罗混揭阵让量今检马弯旱激散吧耐脱余轨客殊深腐匀床州式渡西战得甘警欢言私张知内土学扩早较梁苦价封

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

二洪环头际锻赞土挑簧房影停从持属产平黄裂杆田引张盐粮术喂流炼次学牛尔密勇污渐磷光蚀搞印孙沿木逆彼勤扎谁个闹迅升姆乐盟鲁竟复类企依脂则海案想讲围演请用许威失托加句负费具而替查爸目练频点舞容状喊铁丹诱彻雨

　　Sincerely yours,

　　[name]

　　[title]