A traveler found a sweet note on her flight and shared it online, saying it made her smile. She posted a picture of the note on Reddit.

The note said, 'Hello, I sat in this seat before you. I hope you have a good day and flight. If you're sick, I feel bad for you. I want to make the world nicer.'

The child asked the reader to pass on kindness.

The note said, 'Do something kind today and tell the person to pay it forward. This can start a chain of good in the world. Have a good day.'

The note touched many Reddit users.

One person said, 'This is adorable! The kid has a great goal.'

Another person said, 'What a great kid! The note is very wholesome. The parents did a good job.'

A third person agreed, 'The note is sweet. Kids feel the world is bad, but we can heal it by being kind.'

A fourth person said, 'This is lovely, especially in a world with so much selfishness.'

The note inspired others to do the same.

Someone wrote, 'I hope this helps someone on a bad day. I was inspired by Reddit and wrote a letter on a sick bag.'

They said, 'It felt good to put out positive vibes. I hope someone sees it and feels better.'

The note had wise words for people having tough times, saying 'hang in there' and 'it will be over soon.'