How to become a banker without a Finance/Commerce Background?

Hi. I am a fresh graduate with the major of Linguistics. I just applied for a position of the Commercial bank trainee at Citibank (Asia). Although I did not major in Finance/Commerce in University, I do have passion and interest about banking business. what do you guys think my chances of getting the job will be? Is the recruiting process very harsh in Citibank? Also, do bankers have a good career path in future?
Thanks a lot!