DATA ALERTS IN SSRS

Question

Hello EveryOne!

I am trying to achieve an alert generation (say EARLY WARNING NOTIFICATION) in SSRS. 

e.g. If user have a meeting on wednesday so i want to generate an alert which get arises on monday (i.e. 48 hrs ealry warning alert). Is it possible in SSRS. Please let me know, I am really got stuck. :(

I think it is possible through DATA ALERTS. Can anyone please share the example for this...

Regards,

RAJ