Answer:
Dean should include the apology in the opening.
Step-by-step explanation:
An adjustment message refers to the reply letter to a particular buyer's complaint or claim. What this means is that it is a letter which seeks to explain to a customer why an issue occurred, after the customer has made a complaint or a claim.
Therefore, when the seller or transportation authority writes a letter in response to the complaint or claim letter of the buyer, it is known as adjustment letter.
Bearing in mind that the customer has been inconvenienced, the right thing to do would be to start the letter with an apology.
Therefore in the first paragraph, Dean should apologize for any inconvenience caused, and admit that a mistake has been made. He should then provides the details of the solution.