A very warm and courteous attitude in which one represents the company personally to assist or offer help to clients for their benefit. In the context of the service industry, providing friendly service with ‘volunteering’ and ‘entertaining’ means more than just formally and obligatorily assisting customers.
It embodies a sincere approach to interacting with customers, showing respect, and offering genuine assistance,
with the intention of leaving a lasting impression and truly serving customers from the heart.

If all staff members have a sense of responsibility and value it, it becomes a source of strength that allows them to approach each other with an open heart, work for each other, harmonize, and move towards their goals.
In other words, it conveys the meaning of 'given tasks,' and tasks are something to perform.
Since it is a natural thing to do, the sense of mission becomes the meaning of "the mindset to perform given tasks well.