'Yes' they want to hurt themselves

'No' they don't have a plan

ASK → Where are you? 

TELL THEM → There are better options

ASK QUESTIONS → What is causing you to feel so bad? How long have you been feeling this way? What can I do to help?

LISTEN to them; VALIDATE their concerns and COMMUNICATE your support.

REMOVE access to objects they could use to hurt themselves.

ACT to get them some immediate help

Tell them you are concerned about them and would like to get further support. You could say:

"This is too big for the both of us, we need help, I'd like to call someone who can help us."