If you require some information you can say:
Could you tell me if/when/how much/why……?
I wonder if you could tell me……?
I'd like to know……
I'd like some information about……
If someone asks you for information you can reply:
As far as i know……
Well,(in confidence,) i can tell you that……
I'm afraid i don't know……
I've no idea,I'm afraid……
I don't have that information available just now,can i call you back?
I'm not sure,I'll have to find out,Can i let you know tomorrow?
I'm afraid i can't tell you that,it's confidentail.
Could you tell me if/when/how much/why……?
I wonder if you could tell me……?
I'd like to know……
I'd like some information about……
If someone asks you for information you can reply:
As far as i know……
Well,(in confidence,) i can tell you that……
I'm afraid i don't know……
I've no idea,I'm afraid……
I don't have that information available just now,can i call you back?
I'm not sure,I'll have to find out,Can i let you know tomorrow?
I'm afraid i can't tell you that,it's confidentail.