Last year on November, I got a phone call a day before the interview when I was on one of the conferences. It was my first interview ever therefore I am nervous and I was preparing the whole night. The interviewer is very nice and it was a relaxing interview. It basically go through what I have on my resume. However, I was not prepared to answer in depth on my resume. Since he is an engineer, he asked me to explain the entire process to him and listing the name of every essential substances that I have worked in my research. Since I was not able to answer fluently, I think I did bad on my interview. In addition, they are not hiring any summer internship since it was all full. They were looking for spring co-op. This interview is not really a hiring interview but more like a casual review of your resume.