Here is an example of a letter that seeks to clarify a job offer before actually accepting it.
City, State, Zip
Ms. Vera Argo
Cedar Rapids, IA 52513
Dear Ms. Argo:
Thank you for your prompt telephone call concerning the status of my candidacy. I am very pleased to receive this employment offer for the position as a Quality Assurance Chemist, beginning at the end of May 20XX.
Before I make a decision about this opportunity, I would like to receive additional information about the position and about the orientation program for laboratory personnel.
I am very pleased with this opportunity to begin my professional career with Cargill, Inc. As you requested, I will make my decision before May X, 20XX.
I look forward to speaking with you in the near future.