Be considerate of your contact by being careful not to go over your allotted time without their encouragement. You may say something like, "Well, it looks like I have time for one last question". Your interviewee can then either end your interview with the question, or invite you to ask additional questions. One of the last questions you should always be prepared to ask is to request the names of additional people you can add to your network of contacts. This is especially important if your goal is to obtain more job leads and contacts in the field. Also, ask for a business card and inquire whether they would mind if you stayed in contact with them. Finally, thank the interviewee for their time, and always follow-up with a thank-you letter, either by mail or by e-mail.