For the introduction, you plan to describe briefly the purpose of the interview and its importance. You will add that the interview is planned to take no longer than 90 minutes. Last, you will ask permission to audiotape the interview while assuring students that all their responses will be treated confidentially, with all identifying information omitted (e.g., their names, the names of the companies where they intern).
At the conclusion of the interview, you plan to thank the students for their participation and again state that the interview is an important contribution to understanding how well the internship program is working. The interview protocol script lists all the points for the introduction and conclusion.