An example of "smile"?

In 2004, after I got my master's degree from new york Hotel Management College, I chose to stay and work in the United States.

In August of that year, I learned from the Internet that the Hilton new york Hotel was recruiting staff. So, I sent my personal information to Hilton Personnel Department, and three days later, I received an interview notice.

After the interview, the examiner said, "Maybe your test answer is not perfect, but you always have a sincere smile, which is exactly what Hilton needs. We decided to hire you. "

In this way, I became a receptionist at the Hilton Hotel.