DATA SEGMENT
HY1 DB 'Please input the frist number',0ah,0dh,'$'
HY2 DB 'Please input the Second number',0ah,0dh,'$'
HY6 DB 0AH,0DH,'$'
HY DW ?
HY3 DB ?
HY7 DB 'THE SUM IS:',0AH,0DH,'$'
DATA ENDS
CODE SEGMENT
ASSUME DS:DATA,CS:CODE
...