I know this question is kinda like what’s your nationality :D :D but how about let’s know the language ,too, and also how to say several phrase.

This is Thai
0. How are you doing
  - Sabai dee maii (informal)
  - สบายดีมั้ย
1. Greeting (Hello/HI)
  - Sawadee kub (for Guys to say)
  - Sawadee ka   (for Ladies to say)
  - สวัสดีคับ/ค่ะ
2. Thank you
  - Khob khoon
  - ขอบคุณ
3. Good bye
  - La korn
  - ลาก่อน
4. I love you  
  - Lao ruk ter

something like that… i dont know is this a good idea to post :?  :?

This is Hindi (My national language…India)

1. Greeting (Hello/HI)
  - Namaste

2. Thank you
  - Shukriya
  - Dhanyawad

3. Good bye
  - tata

4. I love you  
  - Mein tumse pyar karta hoon
  - Mein tumko chahta hoon

:D :D

in my native language… filipino, (tagalog, non-dialect)

0. How are you doing
-kamusta na? (general)
-kamusta ho (general formal)
-kamusta po? (absolute formal)
1. Greeting (Hello/HI)
-kamusta (general)
-kamusta ho (general formal)
-kamusta po (formal absolute, older relatives, etc)
2. Thank you
-salamat (general)
-salamat ho (general formal)
-salamat po (formal absolute, older relatives, dignitaries, etc)
3. Good bye
-Pa alam (general)
4. I love you
- Mahal Kita (general)

to the best of my knowledge… enjoi
~nox