I met a person on an anonymous site who revealed that they planned to kill themselves on a date in the very near future. They have a detailed plan and I completely believe that they will go through with the suicide if nothing is done. I managed to get this person to give me contact information (in the form of an anonymous gmail account), and they have agreed to chat again at least once more before the planned suicide. I've also been emailing them with silly questions/conversation topics just to try to distract them from their singular focus on depression and ending their life. I am really scared that this person will kill themselves and I feel like the only person with the power to do anything, as I'm the only one who's aware of the suicide. They won't easily reveal any personal information that I could use to notify the authorities, as they are aware of that strategy. The only thing that gives me hope that I can help them at all is that they set a date for their suicide rather than just doing it immediately. Does anyone have any advice about how I can approach this complicated situation?