An enquiry can be closed when the visitors' questions or concerns have been answered or resolved by agents. When an enquiry is closed, conversations between the visitor and the agent are terminated immediately.
Until you or your visitor closes the enquiry, the chatroom where you have conversations will stay in the Recent area in your Utility tab.
When a visitor closes an enquiry, a notification will appear on your screen, telling you that the enquiry has ended.
Tap Close. The enquiry's status will change from Ongoing or Followed-Up to Closed.

The visitor closes an enquiry
To close an enquiry:

Agent closes an enquiry
CINNOX archives closed enquiries in the Enquiry Overview. For more details, please refer to the Enquiry Overview section of this Guide.