Visitor Visa - B2

I had a B1/B2 US visa interview yesterday and this is how it went:

I am a female and single.

VO : What are you doing in the US?
A : For tourism purpose only. We wanna do sightseeing in New York, Washington DC and New Jersey
VO : Who are you travelling with?
A : My bestfriend and travel buddy. She’s having an interview also at the next window.
VO : How many years are you in Dubai?
A : 15 years
VO : Where do you work?
A : Answer.
VO : Did you travel before?
A : Answered ( Been to Europe 1 time , some countries that requires visa , and some Asian countries that are visa free
VO : How much is your monthly salary?
A : Answer.
VO : Do you have a loan?
A : Yes.
VO : With this monthly salary, how can you travel?
A : I have a credit card ( I cannot answer I have savings in my account as I really don’t have!)
VO : Do you have your bank statement? Can I see it?
A : Given the bank statement and credit card statement
VO : Looking thoroughly, and return to me after. Do you have relatives in the states?
A : None
VO : Are you married? Do you have kids?
A : Answer no and none for both questions.
VO : Do you have a relative here?
A : Have a sister here.
VO : She was looking at me while taking the paper from her side. She handed over a pink paper without saying anything.
A : I was really shocked and just said “Thank you so much Maam”

I wasn’t expecting that I’ll be issued a visa coz of my salary but I think I was really lucky that day.
Advise : Always be honest in answering all the questions. They can figure it out if you are lying as the VO is looking at my face and eyes the whole time she was asking me questions.