How to implement default function arguments in Rust?

Hello, colleagues! I'm new to Rust and coming from Python, where you can easily write functions with default arguments:

def greet(name, greeting="Hello"):\n    print(f"{greeting}, {name}!")

Now I'm trying to do the same in Rust, but the compiler complains. Here's my code:

fn greet(name: &str, greeting: &str = "Hello") {\n    println!("{}, {}!", greeting, name);\n}

The compiler gives an error: expected identifier, found `=`. I understand that Rust doesn't have syntax for default arguments, but how do I solve this problem? I need the function to work with one argument (then the default greeting is "Hello") as well as with two.

I've already tried using function overloading, but Rust doesn't support it.