better way to write if else statement

First time writing Javascript. I just would like know if there is a shorter way of writing this:

<p id="demo"></p>

<script>
    function myFunction() {
    var letter = document.getElementById("myInput").value;
    var text;

    if (letter === "5544") {
        text = "Abar, Marlon 1,800";

    } else if (letter === "5545") {
        text = "Pia, Darla 1,800";  

    } else if (letter === "5546") {
        text = "Salazar, Alex 1,500";   

//etc...

    } else {
        text = "Incorrect Account Number";
    }
document.getElementById("demo").innerHTML = text;
}
</script>

Tried map but I couldn't get it to work.