The best phrase to use when declining a speaking engagement with a professional organization is I would be happy to speak to your organization sometime next year, even though I'm already scheduled for the night of your dinner.
A speaking engagement is what?
Any event, whether public or private, that features a single speaker or a panel of speakers is referred to as a speaking engagement. These occasions assist professionals in networking with others in the same industry and showcasing their technical expertise and skills when prospecting for new business. Business prospecting enables a company or entrepreneur to draw in new customers and create enduring connections that contribute to the success of their enterprise.
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