What do hotel customers want to do and say? What are they usually like? Ask for answers, and be detailed. Don't look for them online. I can't understand them. ...

I heard about the position of "client" for the first time. If it's Chinese food, it's usually ushers, waiters and cashiers. It is also possible that the "customer" you mentioned is a Chinese food reservation clerk and needs to answer the questions raised by the guests. That usually means asking if there are seats, scheduled time, food recommendations, preferential activities, large banquets and so on.

In fact, the most convenient way is for you to ask the person who introduced you to the job whether there are job responsibilities or job descriptions, and that will be clear. You don't need to look online.