can i begin with. hi ..hello? how are you? and end with thank you very much sir. IN INTERVIEWING(RECORDED)

Answer 1

I would think you should be more professional.

Something along the lines of,
Good afternoon, Accounting department, Susan Smith (maybe mention from ABC Corp?)speaking.

How may I help you?

Maybe not this exactly, but you get the idea.

The ending can be simple. It was nice speaking with you today, etc.

Answer 2

Helper is right. Using what you included in your post is far too informal. You should use the more formal phrases helper has given you.