A father in California wanted to play tennis with his kids, but park rangers stopped him, thinking he was teaching lessons without a permit.

Sam Dogen was playing tennis with his 6-year-old daughter and 9-year-old son at a park in San Francisco.

Dogen said he took his kids to the park to get some exercise and have fun after a trip to Hawaii. He wanted to help them feel better after the long trip. He said they have played tennis many times before. He thought it would be a nice afternoon.

Park rangers came up to Dogen and asked if he had a permit to teach tennis about 20 minutes into their game.

This is not related to the story about the father and his kids playing tennis.

A father in San Francisco was playing tennis with his kids when park rangers approached them. The rangers thought he might be teaching tennis without a permit.

Dogen was surprised when the rangers asked him about a permit. He thought to himself, 'What are you talking about? These are my kids.'

The confusion stopped when one of Dogen's kids spoke up.

His son told the rangers, 'He's my daddy.'

The family did not get a ticket, but a ranger told Dogen he could have been fined $192 for teaching without a permit.

This is not related to the story about the father and his kids playing tennis.

Sam Dogen talked to Fox News Digital about what happened with the park rangers.

Dogen said the rangers did not give him a ticket, but they did give him a warning. He wondered why they stopped him at all.

Dogen said there was no one else waiting to use the court. He thought it was strange that the rangers bothered them.

The park department said rangers check if people are teaching tennis for money because they need a permit to do that.

A spokesperson for the park department said the rangers were just doing their job. They ask questions to see if someone is teaching tennis for money or just playing with their kids.

This is not related to the story about the father and his kids playing tennis.

The park department checks if people are teaching tennis for money on public courts.

Dogen understands why the city has rules about teaching tennis for money, but he thinks parents should be able to teach their own kids without a permit.

Dogen said it is hard to raise kids in a city like San Francisco, and it gets even harder when police officers are not friendly.

Dogen's main concern was keeping his kids safe during the interaction with the rangers.

He just wanted to calm the situation down and keep his kids safe.

Dogen joked that he might bring his kids' birth certificates next time they play tennis to prove they are his children.

A family was questioned by park officials for playing tennis together.

Dogen said he will not get a permit to teach his kids tennis. He will bring their birth certificates to prove they are his kids.

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Dogen hopes the city will be more welcoming to families after what happened.

Dogen wants San Francisco to be a place where kids and families feel welcome, not a place where a father gets in trouble for teaching his kids tennis.

Brittany Miller is a writer for Fox News Digital and used to work for another news company.