loginprocess.php

<?php
session_start();
$conn = mysqli_connect("localhost", "root", "", "room_booking");

if(isset($_POST["login"])){

    $user = mysqli_real_escape_string($conn, $_POST["name"]);
    $pass = md5($_POST["pass"]);
    echo $user;
    echo $pass;

    $sql = "SELECT * FROM customer WHERE name = '$user' AND adress = '$pass'";
    $row1 = mysqli_fetch_assoc($conn, $sql);

    if($row1["name"] != null){
        echo "Welcome: " . $user;
        $_SESSION["username"] = $user;
        header("Location: home.php");
    }
    else {
        echo "Unauthorized user <br>Please login";
    }
}
?>