How to deal with multiple guests in the hotel system corresponding to a guest history file?

We call it the consumption characteristic file, which mainly includes the room type rented by the guest, the house price, the payment fee, the payment method, the service received, whether there is any debt/omission, etc. Wait a minute.

The collection and preservation of these materials can help the hotel understand the situation of the tourism market, different types of guests and their characteristics, as well as the way to stay, and use these effective information to help the hotel promote sales.