Three formal ways to say hello are...
Good morning, good evening, how do you do?
When you meet someone for the first time, you say:
It's nice to meet you!
At least one way to say good bye in a informal way
See you later!
How are you today?
I'm embarrassed
How can you say "bye" in a formal way?
Have a nice day
How are you today?
I'm excited!
How are you today?
I'm annoyed!
Two informal ways to say Hello are...
hey there, hi
How are you today?
I'm nervous
How are you today?
I'm confused