Booking.com Data Scientist interview questions

I completed the coding challenge on HackerRank and got an email from the recruiter to book some time for an initial discussion. In the call with the recruiter, I had to explain my background and the work I have done in the data science area, and also to address my availability and salary expectations. Following this, I had an interview scheduled with two data scientists at booking.com. This interview was more detailed, I had to explain one data science (specifically machine learning) project I was involved. Then they presented a real-life business case and asked me how I would solve it from a data science perspective. This interview too about an hour. After that I got an email from the recruiter saying that it was decided to not further proceed with the interview process.