#define DIALOG_WEAPONS 1
#define DIALOG_CARS 2

//where you need it

ShowPlayerDialog(playerid,DIALOG_WEAPONS,DIALOG_STYLE_LIST,"Title","Lists","Button one","Button 2");

#define DIALOGID 3300

#define DIALOG_Teleport 1

#define DIALOG_WEAPONS 3
 
// In some command
ShowPlayerDialog(playerid, DIALOG_WEAPONS, DIALOG_STYLE_LIST, "Weapons", "Desert Eagle\nAK-47\nCombat Shotgun", "Select", "Close");
 
public OnDialogResponse(playerid, dialogid, response, listitem, inputtext[])
{
    if(dialogid == DIALOG_WEAPONS)
    {
        if(response) // If they clicked 'Select' or double-clicked a weapon
        {
            // Give them the weapon
            if(listitem == 0) // They selected the first item - Desert Eagle
            {
                GivePlayerWeapon(playerid, WEAPON_DEAGLE, 14); // Give them a desert eagle
            }
            if(listitem == 1) // They selected the second item - AK-47
            {
                GivePlayerWeapon(playerid, WEAPON_AK47, 120); // Give them an AK-47
            }
            if(listitem == 2) // They selected the third item - Desert Eagle
            {
                GivePlayerWeapon(playerid, WEAPON_SHOTGSPA, 28); // Give them a Combat Shotgun
            }
        }
        return 1; // We handled a dialog, so return 1. Just like OnPlayerCommandText.
    }
 
    return 0; // You MUST return 0 here! Just like OnPlayerCommandText.
}