Read the formal letter.

Jorge Smith
123 Main Street
Anytown, IL 12345

Janice Parker:

Our annual awards banquet will be held in January. We would be honored if you would agree to be our key speaker.

Please find all the relevant information in the attached itinerary. We will contact you in a week’s time to see if there is any other information you require and to answer any questions you might have.

Sincerely,
Jorge Smith

Which part of the letter needs revision in order to be appropriate for a formal letter?

the salutation
the body
the closing
the signature