商务英文邀请函

 一、Dear sir/madam: 

 I'm delighted you have accepted our invitation to speak at the conference in [city] on [date]. 请柬

 As we agreed, you'll be speaking on the topic from [time] to [time]. There will be an additional minutes for questions. 请柬

 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, 

 [name] 

 [title]