การทักทายและการตอบกลับ greeting and Responding

http://napatsakornohm123.blogspot.com/2017/04/1-greeting.html?m=1

Greeting and accepting greetings to build interpersonal relationships.

for example

1.Greeting someone who has known before

2.Greetings at different times

3. Greeting a person when meeting for the first time

4.Greetings when meeting in the afternoon

5.Greetings after long time no see