May I know what is this regarding about? is close but has a little mistake, should be,'MAY I KNOW WHAT THIS IS ABOUT?' NOT IS THIS.
"May I leave the message?" IS NOT RIGHT, YOU ARE ASKING THE OTHER PARTY TO LEAVE A MESSAGE, NOT YOU LEAVE A MESSAGE, YOU SHOULD SAY,' MAY I TAKE A MESSAGE? OR DO YOU WANT TO LEAVE A MESSAGE?
ONE ONE EVER SAID.....'you are looking for Mr Lam, is there any problem or special things?' IT'S WEIRD AND CHINESE-ENGLISH.
hi... if u are in the phone, u should say .... (May I leave the message?) that is enough.
if u just want to know, u can say ... (you are looking for Mr Lam, is there any problem or special things?)