After I went to the honda

I went to Honda to change oil last friday after school.
A man was standying outside, and I stopped my car beside him.
He said hello to me and asked "May I help you?"
I said "I want to change oil."
He checked a mileage and my impormation.
After he checked, he said " You did oil change three times." and asked me to go in the room.
There was another guy and asked me what i wanted to do.
I said that i needed oil change.
He said " It is $ 28.50 and you can wait over there."
When i was in the customer service center, they took my car in the repair shop.
When they finished to check, a man called me to the cashier and said "Everything is fine."
I said "Thank you"
After I paid for it, I left there.

While I was waiting for my car to be checked, I found out the difference between Korean repair shop and American one.
In Korea, we are able to see the process how a car gets fixed, however a car mechanic takes a car to somewhere to fix and check the car in United States.