Identifiers

The names you assign to these variables are called Identifiers.

The general rules for constructing names for variables (unique identifiers) are:

• Names can contain letters, digits, underscores, and dollar signs.
• Names must begin with a letter, $ or _.
• Names are case sensitive (y and Y are different variables).
• Reserved words (like var, let, for, typeof and more) cannot be used as names.

const dialogue = "How you doin!!";
// Identifier should be unique.
const dialogue = "We were on a break";
// And case sensitive
const Dialogue = "hello world";

console.log(dialogue)
console.log(Dialogue)

This is good time edit the example and try using let and var instead of const.