Hi Minori,

I regret to miss chances to talk with you as I was rather busy past three days..
By the way, I need your help.

I set up a meeting, but one of presenters suddenly could not make it due to a client visit. Therefore, I sent the attendees an email about it as follows.
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All,

Please be informed that Tanaka san can not make it for today's meeting due to a clinet visit. The agenda will be cancelled and discussed next week.

I am sorry for this short notice and thank you for your understanding.
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But some members ringed me right after I posted this mail since they were not sure if the meeting itself will be cancelled or just only the topic will be skipped. Would you kindly correct my sentence to make myself clear?? Any comments would be appreciated.

Thank you!