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[Date of letter-month, day, and year]

[Recipient's first and last names]
[Company name]
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Dear [recipient's name]:

In July, Health for Life will be holding a special workshop about balanced nutrition for children. In thinking of a guest speaker for this event, your name immediately came to mind. Would you join me from 2 to 4 p.m. on July 15 as our guest speaker? This important event will take place at Dr. Marisa Jones' office in Baltimore. I'll be happy to provide further details and directions and to talk further about topics and format.

Please contact Sue Little at [[email protected]] to let us know whether you are able to speak at the workshop.

I hope to see you in July, and once we confirm the date, we can talk over the details.

Best regards,

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[Sender's first and last names]