Odoo's XML

<record id="open_hotel_get_dates_tree" model="ir.actions.act_window">
    <field name="name">Get Calendar Files</field>
    <field name="type">ir.actions.act_window</field>
    <field name="res_model">hotel.getdates</field>
    <field name="view_mode">form</field>
    <field name="context">{'form_view_initial_mode': 'view', 'default_res_id': 'hotel.getdates,get_first_record_id()'}</field>
    </record>



    <record id="view_hotel_getdates_files" model="ir.ui.view">
    <field name="name">Get Calendar Files</field>
    <field name="model">hotel.getdates</field>
    <field name="arch" type="xml">
        <form string="Get Dates" create="false">
            <sheet>

                <group>
                    <field name="date_selector" widget="one2many_list">
                        <tree>
                            <field name="name"/>
                            <field name="dates"/>
                        </tree>
                    </field>
                </group>

            </sheet>
        </form>
    </field>
</record>