Dynamic where clause

In this program we see the use of where clause.

REPORT ZII_RKP_TEST1.

DATA: cond(72) TYPE c,
itab LIKE TABLE OF cond.
PARAMETERS: source(10) TYPE c, dest(10) TYPE c.
DATA wa TYPE spfli-cityfrom.
CONCATENATE 'CITYFROM = ''' source '''' INTO cond.
APPEND cond TO itab.
CONCATENATE 'OR CITYFROM = ''' dest '''' INTO cond.
APPEND cond TO itab.
CONCATENATE 'OR CITYFROM = ''' 'BAYERN' '''' INTO cond.
APPEND cond TO itab.
LOOP AT itab INTO cond.
WRITE cond.
ENDLOOP.
SKIP.
SELECT cityfrom
INTO wa
FROM spfli
WHERE (itab).
WRITE / wa.
ENDSELECT.