Manpower Administrative interview questions

My interview with the interviewer was great. He said he if he is to hire me how will I be as asset to the company. I told him that I will be a great asset to the company because I will work to the best of my ability and I will prove to him that I can do the work well. I also tell him that he will not disappointed because I am a reliable person. I will also work and improve myself by helping in other areas of the company when ever they needed help.