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

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.

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.

In an interviewing setting, it is important to maintain professionalism and etiquette. While it is common courtesy to exchange greetings at the beginning and end of an interview, it is advisable to focus primarily on answering the questions and showcasing your qualifications.

To begin the interview, you can start with a formal greeting such as "Good morning/afternoon/evening" followed by introducing yourself and expressing your enthusiasm for the opportunity. For example, you could say, "Good morning! My name is [Your Name]. I am thrilled to have the chance to speak with you today and discuss my qualifications for the position."

During the interview, be prepared to answer the questions with confidence and provide relevant examples from your experience. Research the company and the role beforehand, so you can ask insightful questions or refer to specific aspects that capture your interest. This demonstrates your genuine interest and preparedness.

As the interview comes to a close, you can thank the interviewer for their time and express your appreciation for their consideration. You can say something like, "Thank you very much for the opportunity to speak with you today. I appreciate your time and consideration. I look forward to hearing from you soon."

Remember, this is just a general guideline. The specific approach may vary depending on the company culture and interviewer's preferences. It's always a good idea to adapt your approach to align with the atmosphere and expectations of the organization.