In English as well as in Spanish, we greet depending on the time of day, we present the most common forms of greeting:

EXAMPLES

Ana: good morning tom, you sleep well?
Tom: Hi Ana, I slept great, you have something to do?
Ana: No, I have the morning off, why?
Tom: going, I invite you to breakfast
Ana: it's a great idea, I love it.

CONVERSATION IN THE AFTERNOON

Erika: good afternoon
Laura: good afternoon Erika
Erika: it is a beautiful afternoon
Laura: Yes, yes it is
Laura: how was your day?
Erika: not great, I'm very tired
Laura: It's a shame, go home
Erika: Yes, I will, bye Laura
Laura: Goodbye Erika