A few changes on Tax and the driver class

Tax
- Implemented proper loop when incorrect response is given

Driver Class
- Made new ArrayLists for each of the days (Note: Have not implemented
the days for booking yet)
- Testing out the null objects in relation to the Tax object
instantiation.
When the user says Y to the prompt, it should create the object, else it
should not.
Have not been successful so far

Status Class
- Implemented this class