Visitor Visa - B2

In October 2016 I applied for my USA visa and got rejected. VO asked me alot of questions and honestly i wasnt really prepared for the interview as I was too confident about my case because I have travelled to USA multiple times during late 1990s and mid 2000s and we never over stayed there. We used to travel back and forth from Saudi to Pakistan and USA back then and after marriage, I've been to Dubai, Thailand and Philippines.

My husband applied for a US visa to attend a conference in August and he got a 5 year multiple visa. After he received it, then I applied for myself and got rejection.

VO: What will you do in New york? (it was declared on the visa form)
Me: I want to go to New York for Christmas and New year's eve. I will spend time with my sister in NY.

VO: what do you do here?
Me: I am a house wife.

VO: how did your sister got Citizenship?
Me: Married a US citizen

VO: Are you going to meet your husband in the USA?
Me: I wont because he is on a business trip and all his expenses are paid by his company.

than VO asked about his salary and job etc, my earlier days in Saudi, my father's job and accomodation. (It was a 15-20 min interview) and rejected my visa.

Now I am applying again as my husband is going to the USA again to attend another work based conference.

We have decided that after his conference we will spend sometime together in the USA for holidays. Hope my approach is correct this time and they dont reject my visa based on the previous answers. Please reply in comments and let me know if I am on the right track. Also, I have decided I wont be mentioning about my sister.

Thanks in advance.