A: iam so tired!
B: go sleep then
A: i know, good night mom
B: night, son. Have a nice dream
A: you too

A: good morning B! How are you today?
B: good morning A! Iam good. Anyway, i have to go to school now! Goodbye!
A: goodbye! Have a nice day!

1 1 1
A :Good morning , nice weather today isn'it?
B: Good Afternoon , the weather is so hot you think so?
C : Good evening , Do you enjoy the sunset today?
D : Good night , have a nice dream.