Microsoft PM interview questions

Applied to the position via website. Recruiter called me back and set up a phone screener for a week later. The phone screen consisted of 2 design questions, one of which was to design a parking garage in the center of the city. Interviewer was very pleasant. Received an invitation to fly out to seattle a week later. Had 3 interviews and a lunch over the course of the morning. All questions were design related, with interviewers asking me to create an online book store for a university, a CMS for a private business and a universal remote control. Interviewers were fairly nice, but no personality questions or questions about my experience at all. Didn't make it past the third interview.