Public Affairs Director, Jon Michaels (since 1977), talks with Sheri Nelson, Suicide Prevention and Crisis Director at the Sioux Falls Helpline Center. The Helpline Center is South Dakota’s leader in suicide prevention and response. If you or someone you know is having suicidal thoughts please call 1-800-273-8255 anytime, day or night, and we will provide you with the caring support you need. All South Dakotans have access to the crisis line all day, every day. The service is free and confidential.