L1, L2 Visa

Thanks to all who posted their experience and the moderators of this superb site. My interview scheduled at 8:45AM. I reached there by 8:00AM. After the security check and finger print check I went to the cash counter where I submitted the DD. After that I went to the interview hall and waited for my turn for half an hour.

Me: Hi Good Morning, How are you?
VO: Hi Good Morning.
Then she checked all my forms including I129S and something she typed in her computer. Then she asked me to keep the right finger for finger print scanning.
VO: Who is your client?
Me: My client is ZZZ.
VO: What you are going to do for your client?
Me: I started telling about my role at onsite.....
In between she interrupted and told 'that is enough, I know you could memories well' and smiled.
VO: Only YYYY company proprietary tools are required for this work?
Me: Yes. We have developed the company proprietary tools for the project to meet the client requirements.
VO: Everyone in your company can learn these tools and do this work and why you have selected for this job?
Me: I am the one having the specialized knowledge in ZZZ.... and told about my project and the modules I am expertise...
VO: Who developed these modules?
Me: I have developed these modules.
VO: How long you are working for this project?
Me: I am working in this project for the last three years.
She written something in the I129S form and given back the two copies to me and told 'Your visa is approved and you will receive with in a week time'
Me: Have a nice day. Thank you.

Tips:
1. Wear formals, I suggest to use tie also.
2. Smile and wish when you first enter into the interview counter.
3. Answer confidently and slowly, don’t get tensed.