Basic Thai Phrases You Need to Know
sà-wàt-diiHello / goodbye     
láew jer ganSee you again
kun chêu à-raiWhat is your name ?
yin-dii tîi dâi rúu-jàkNice to meet you , pleased to meet you
sà-baai-dii máiAre you well ?        
bpen yang-ngai bâangHow are you ? , How have you been ?
kòp-kun    Thank you
dôui khwam yin-dii  , yin-diiYou are Welcome     
kŏr-tôhtSorry
kŏr-tôhtExcuse me
sĭa-jaiSorry   
mâi-bpen-rai   It’s ok , nevermind
kâ  Polite particle for female speakers
Polite particle for female speakers (question) 
krápPolite particle for male speakers
chên-gan     same to you
mâak     very
yéh       a lot    
lăai       many