Simulated Mock visa Interview. Need Advises

[Nolan]

Did a Mock visa Interview (V.O Is my cousin)
Needed where I went wrong here

VO : 	Good morning 
Me : 	Good morning 
VO : 	Passport Please 
Me : 	Hands over Passport 
VO : 	Whats the purpose of your Trip to the US
Me : 	I will be going for an Offshore Technology conference in Houston Texas
VO : 	How Long do You plan to stay
Me : 	I will be leaving on the 4th of May, and should be back on the 12th of May 2019,        	will be staying for a week
VO : 	Who will be paying for your trip
Me : 	My Company
VO : 	What is your Designation
Me : 	I am a solutions Architect
VO : 	How would the Conference help your Company
Me : 	We design Solutions for Oil and gas companies. So i wanted to know more about Design of 	Automated processes and How their solutions work, inturn we could see what we can 		design for companies we have contracts with here.
VO : 	Whats your Annual Salary
Me :	1.8 Million (My local currency) After Taxes and Pension

this is a Mock Interview, just needed to be sure if i went out of track here

[immihelp]

I don't see what is wrong here.