Stranger Shows Girl With Autism Kindness While on a Plane

Mom writes an online thank you to the stranger that helped her daughter cope with flying on a plane.
3:00 | 01/15/14

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Transcript for Stranger Shows Girl With Autism Kindness While on a Plane
And finally tonight, the kindness of strangersonnells in all shapes and sizes. And sometimes when you least expect it and need it the most. Just ask the little girl on the plane. Her mother and the mystery passenger who made all the difference. Abc's gio benitez, now, and the man who is "america strong." Reporter: Little kate, a 3-year-old ball of energy, with dirty blonde hair and big, blue eyes. But kate also has autism. She can't sit still for long. So, when kate and her mom, shanell, boarded a plane for philadelphia, shanell was bracing for the worst. We knew that flights were difficult for her. Reporter: A businessman sat down. Kate immediately started reaching for him and calling him daddy. And what happened next led shanell to write an extraordinary thank you note that she posted online. Dear, daddy, in seat 16c. You could have shifted uncomfortably in your seat. You could have ignored her. You could have given me that smile that means manage your child, please. Reporter: But that businessman, eric kunkle, put down his work. And spent the next 2 1/2 hours playing games with kate. The little ninja turtles. She brought them out. And she wanted to play. We talked about my dogs. I showed her the pictures. Sometimes the simplest things are a big deal. Reporter: Shanell's letter became a global sensation. More than 70,000 likes on facebook. It only took one day to make its way to eric. I would never have expected this to happen. And I didn't. It's a little overwhelming at times. Reporter: Thank you for entertaining kate so much, that she had her most successful plane ride yet. And thank you for putting your papers away and playing turtles with our girl. Eric grew emotional hearing the end of shanell's letter. It makes me feel good. Reporter: By just doing a little, eric kunkle did so much. And that makes him "america strong." Gio benitez, abc news, phyllis, new jersey. 2 1/2 hours of love on a plane. We thank you for being with

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