Accepting an Input when running a PL/SQL procedure

OS - RHEL 7.9

DB version - 19.18

I am running the dbms_datapump executable within a procedure to copy schemas. I created the procedure and then I am calling it with the inputs.

Question/Suggestions - I would like to be prompted for input (source and destination users) when calling the procedure.

-----------Procedure Start------------------

CREATE OR REPLACE PROCEDURE mrw_copy_schema 

(

 in_srce_user  IN VARCHAR2,

 in_dest_user  IN VARCHAR2,

 in_dest_user_pswd IN VARCHAR2,

 in_paral_lvl  IN NUMBER DEFAULT 4,

 in_netwk_link  IN VARCHAR2 DEFAULT 'MRW_LINK',

 in_incld_rows  IN NUMBER DEFAULT 1 

) 

AUTHID CURRENT_USER

AS