Sessions in webmethod

  I have created webpage (aspx) with a Button("This is  Dowload button,When the user clicks on this button,he can download data.") Now I want to show the feed back message to user.I try to do this in AJAX. I have created webmethod and added functionality here but the problem is I have lot of seesions.

                 From script file I am calling method like this

                               function GetPeople()
{
                       PageMethods.GetPeople(GetPeopleSucceededHandler,GetPeople ...