Booking service api
As asked in assignment i provided incomplete solution with comments how it can be better. The application and tests are all set up and ready to run. Before the first startup it is recommended to run mvn clean then mvn install to ensure mapper implementation will generated correctly.
On startup in-memory instance of h2 will run. You can access the db console by this path: http://localhost:8080/h2-console and connect to the db using credentials from application-properties.
For convenient testing i provided a postman collection located at resource directory.