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 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.
Sincerely yours,
亲爱的先生/夫人:
我很高兴你接受了我们的邀请，在[日期]在[城市]会议上发言。
我们同意，你将从[时间]到[时间]的主题。还有几分钟的问题。
你能告诉我你需要什么样的视听设备吗？如果你能让我知道你的具体要求[日期]，我将有足够的时间，以确保酒店为您提供您所需要的。
再次感谢你同意发言。我期待着收到你的来信。
谨致问候
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