Fresh graduate finding his first job? Please help!?

That thought will be the furthest from their mind. Employers do not expect graduates to work in the field of their major, especially those that graduated in business administration applicable fields. It's a moot point to argue. They will not ask you why are you choosing logistics over finance. Have you had a job before? A logistics firm still has all the standard job positions as any other business - there is a finance department, marketing department, sales department etc as in any business. You applied for the management trainee program which means you might be groomed to take a management position in any of those fields. Just because people major in Finance doesn't mean they go off to become investment bankers or even bankers for that matter. If you are on the 2nd or 3rd round of interviews and it's going to be a panel interview, they are not going to ask you "Why" questions. It will most likely be a situational interview in which you would be expected to demonstrate the standard S-A-R format of answering so they can measure your ability to concisely apply your knowledge and experience in a real situation.