Greeting

1. (usually plural) an acknowledgment or expression of good will (especially on meeting) 

2. Expression of kindness or joy; salutation at meeting; a compliment from one absent. 

Everyday greetings:

1. Good morning

2. Good afternoon

3. Good Evening

4. Goodbye

5. Good night

Special Greetings:

1. Merry Christmas /Happy Christmas

2. Happy New Year

3. Happy Easter

4. Good luck

5. Congratulations!

6. Get well soon.

Example:

Clara: "Good morning Mario. How are you?"

Mario: "Good morning, Clara. I'm fine. How about you?"

Clara: "I'm fine too."

Mario: "That's good."