Sample internship offer letter template. The internship offer letter should include the start and end dates of the internship, as well as the number of working hours per week.Utilize the following email templates as a resource when corresponding with organizations in Washington, DC. Are making normal academic progress. State the position you are applying for, how you found out about it, and ask for consideration based on your skills and experiences you have to offer. Also, list other activities that the student is involved with at the university and outside of the university. Be enrolled as an undergraduate student at an accredited college or university.