The interview had 3 parts - first: short phone interview regarding soft skills questions, my motivation to work at Booking, second: a video conference during which I was asked quite similiar questions and third one: a phone assessment. I was playing a role of the business development coordinator and my interviewer was the client.
Whole proccess was carried out in very nice and friendly manner despite it was quite busy time for Booking (Booking Annual Meeting).
I am sure I'll try again when new possibilities to work in Booking appear :)