Elivetor controller

We have a elivetor project
For using automatic we'll try to using Arduino based automation

I want just a program
To control a lift on 4 floors

If i give a input as a lift calling from a push boton
Lift will be stop on that floor

Like i am pushed 2nd boton lift will moving 1st flore to second floor and stop with proxy sensor

Than i am pushed 3rd boton lift will moving 2nd floor to 3rd floor

As usual lift moving 3rd to 4th floor

And any tine lift gose on any floor to calling which floor required

I want just a program for Arduino uno

And it's pin discretion also
Which pin has which action perform