UNHCR interview questions

I am applied via email on July 2014, and in September I got the reply from the HRD. In the general, the content of the email explaining the term of reference and if I still interested, I need to reply the email with confirmation that I've read and agreed the TOR. Around 2 weeks later, I got a phone call from UNHCR. It's a phone Interview, very casual interview. Just everyday question. Primarily asking about my readiness to work in the office, and my passion to working for UNHCR. I think they need people to help as soon as possible. I got accepted at that time too. And on the next morning, I got email from the HRD to complete the form and prepared some required documents. And I started my first day on the next week