Como estas
How are you?
Como esta usted?
How are you? (Formal)
Que Tal?
How are you? (informal)
Y tu?
And you? ( like what about you)
Muy bien
Very well
Mas o menos
Meh
mala (Mal)
Bad or Terrible
Igual
Same
goodnight
Buenas noches
good day
buenos Dias
good morning
buenos Dias or buenas Manana
goodafternoon
buenas Tardes
Hasta Luego
see you soon or see you later
Hasta Pronto
see you soon
Hasta Manana
see you tomorrow