Career switch from quality control department to aeronautical core job

Hi, I have completed my b.e in aeronautical... Now working in quality control department...though I didn't get job in my core have plan to switch over to banking sector.... Wat to do this

How to answer.if interviewer asks what's reason u choose banking....

A bit more information about your existing job, how many years have you served in your current role would help us help you. Also, you've to give the interviewer the honest reason for which you chose banking. Can you share it with us?