Android making a listview with numberd items

i want to make a dynamic listview with numberd items.Here i have retrieved values from sqlite database into listview,and actually it is numberd according to their id's which stored in database.But iam using a dynamic list view,so i want to show numberd items starting from 1 in each time i load the listview.For example people booking flight tickets for diffrent dates and flight authorities will display a final listview for the current date including the persons who booked for that date.

 consider  today is 10-12-2014
 person A booked ticket for the date 12-12-2014, so his "id" might be "1" in database.
 person B booked ticket for the date 13-12-2014,so his "id" might be "2" in database.
 person c booked ticket for the date 13-12-2014,so his "id" might be "3" in database.


    but when the day "13-12-2014" comes person B's id should be "1"(no need to have any connection with database, just enough a numberd representation to   show today's list is this. 

like 
 1.person B
 2.person C

  thats all.

this is my displayadapter class

 public class DisplayAdapter extends BaseAdapter {

private Context mContext;
private ArrayList<String> id;
private ArrayList<String>name;
private ArrayList<String>phone;


public DisplayAdapter(Context c, ArrayList<String> id,ArrayList<String> name, ArrayList<String> phone) {
    this.mContext = c;

    this.id = id;
    this.name = name;
    this.phone = phone;
}

public int getCount() {
    // TODO Auto-generated method stub

    return id.size();
}

public Object getItem(int position) {
    // TODO Auto-generated method stub


    return null;
}

public long getItemId(int position) {

    // TODO Auto-generated method stub
    return 0;
}

public View getView(int pos, View child, ViewGroup parent) {
    Holder mHolder;
    LayoutInflater layoutInflater;
    if (child == null) {
        layoutInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        child = layoutInflater.inflate(R.layout.viewthem, null);
        mHolder = new Holder();
        mHolder.txt_id = (TextView) child.findViewById(R.id.d);
        mHolder.txt_name = (TextView) child.findViewById(R.id.nm);
        mHolder.txt_phone = (TextView) child.findViewById(R.id.ph);
        child.setTag(mHolder);
    } else {
        mHolder = (Holder) child.getTag();
    }
    mHolder.txt_id.setText(id.get(pos));
    mHolder.txt_name.setText(name.get(pos));
    mHolder.txt_phone.setText(phone.get(pos));

    return child;
}

public class Holder {
    TextView txt_id;
    TextView txt_name;
    TextView txt_phone;
}

}

this is my dbhelper class

    mydb = new DBhelper(this);

        SQLiteDatabase database = mydb.getWritableDatabase();
        Cursor mCursor=database.rawQuery("SELECT * FROM contacts WHERE dt='"+d+"'", null);

        userId.clear();
        user_name.clear();
        user_phone.clear();
        if (mCursor.moveToFirst()) {
            do {
                userId.add(mCursor.getString(mCursor.getColumnIndex(DBhelper.CONTACTS_COLUMN_ID)));
                user_name.add(mCursor.getString(mCursor.getColumnIndex(DBhelper.CONTACTS_COLUMN_NAME)));
                user_phone.add(mCursor.getString(mCursor.getColumnIndex(DBhelper.CONTACTS_COLUMN_PHONE)));

            } while (mCursor.moveToNext());
        }
        DisplayAdapter disadpt = new DisplayAdapter(token.this,userId, user_name, user_phone);

        obj.setAdapter(disadpt);
        disadpt.notifyDataSetChanged();

        mCursor.close();