Chapter 1
Greeting

In the morning:
1. Good morning  grand pa
2. Good morning dad  
3. Good morning mom


After noon: (12 pm- 4 pm)
1. Good afternoon uncle
2. Good afternoon children
3. Good afternoon sheetal 

After 4 pm: 
1. Good evening mom
2. Good evening sir
3. Good evening madam

Late evening when you depart:
1. Good night, sweet dreams 

You can wish "good day, have a nice day", have a great day" any time during  the day

Informal: 
Hi.
Hello.
Bye.

Formal: See you.
Informal: Ciao.

Take care.
Have a great day.