急须邀请外籍教授来我院开设讲座的英文邀请函

Question

时间地点那些先空着，麻烦各位了，报酬是20分。
现在是20点，再等两分钟整，无其他答案我就给分数了。

Answer 1

Dear Prof. XXX,

We sincerely dedicate our invitation to you for delivering a lecture on .... from MM, DD, 2007 to MM, DD, 2007.
Please kindly give us a reply as to whether you will be able to accept this invitation.
Yours faithfully,

XXX