Object Assign Conflict

let user = {
    name: "John", 
    surname: "Doe",
    age: 30,
    city: "Dallas"
}

let address = {
    city: "London",
    street: "Baker Street",
    number: 225
}

let info = Object.assign(user, address);

console.log(info);

//Result: 

/**
 {
        name: "John", 
        surname: "Doe",
        age: 30,
        city: "London",
        street: "Baker Street",
        number: 225
 }
 
 */