you could say tschüss or auf wiedersehen
Goodbye Deponia - 2013 VG is rated/received certificates of: Germany:6
Goodbye e amen - 1978 is rated/received certificates of: Finland:K-16 West Germany:12
Never Say Goodbye - 1956 is rated/received certificates of: Finland:S Sweden:Btl West Germany:12
Long Hello and Short Goodbye - 1999 is rated/received certificates of: Germany:16 (w)
Goodbye Lenin
Formal: Guten Tag and Auf Wiedersehen Informal: Hallo and Tschüss
Formal: Auf Wiedersehen Informal: Tschüss Tschau, germanized version of the italian "Ciao."
Goodbye Miss 4th of July - 1988 TV was released on: USA: 3 December 1988 Germany: 14 June 1994
Buffy the Vampire Slayer - 1997 Goodbye Iowa 4-14 is rated/received certificates of: Germany:16 USA:TV-PG
Chicago Hope - 1994 Hello Goodbye 2-1 was released on: USA: 18 September 1995 Germany: 14 May 1996
Nash Bridges - 1996 Goodbye Kiss 4-24 was released on: USA: 14 May 1999 Germany: 2 January 2001
Cagney and Lacey - 1981 Hello Goodbye 7-13 was released on: USA: 2 February 1988 West Germany: 9 November 1989