use praisonai::{Agent, Prompt};
let prompt = Prompt::template(r#"
You are a {role} assistant.
Your expertise is in {domain}.
Always respond in {language}.
"#)
.var("role", "technical")
.var("domain", "AI")
.var("language", "English");
let agent = Agent::new()
.instructions(prompt)
.build()?;