Write A Notice To Managers - Attend A Meeting

Hi every one,
one of our client's business presentation held on 17th Aug 2016 at our factory. I have to inform all our senior management to be present there between 12 PM to 1:30 PM.
please help me, how to write an effective professional mail?

You could draft it on the following lines

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Subject : Meeting on Wednesday 17th August at 12 noon at ____ (location) - Attendance Compulsory

Our esteemed client _____________ (name) has been invited to share their business presentation with us on Wednesday 17th August at 12 noon at ____ (location) . All senior management personnel are expected to attend the same from 12 to 1.30 pm.



This email is being send to you with a request to make a note of the above and attend the meeting on time.

Regards