text: Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
  ### Context:
  CREATE TABLE Clients (Customer_Name VARCHAR, Client_ID VARCHAR); CREATE TABLE Bookings (Customer_ID VARCHAR); CREATE TABLE Clients (Customer_Name VARCHAR)
  ### Question:
  Show the names of all the clients with no booking.
  ### Answer:
  SELECT Customer_Name FROM Clients EXCEPT SELECT T2.Customer_Name FROM Bookings AS T1 JOIN Clients AS T2 ON T1.Customer_ID = T2.Client_ID