<xs:complexType name="CommonServiceType" abstract="true" xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:sequence>
    <xs:element name="Identifier" type="IdentifierType">
      <xs:annotation>
        <xs:documentation>Unique service identifier</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="Type" type="xs:token" minOccurs="0">
      <xs:annotation>
        <xs:documentation>For optionally specifying the service type / kind of service </xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="StartDate" type="DateType">
      <xs:annotation>
        <xs:documentation>Start date of the service</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="EndDate" type="DateType" nillable="true">
      <xs:annotation>
        <xs:documentation>End Date of the service</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="Quantity" type="xs:int" nillable="true" minOccurs="0">
      <xs:annotation>
        <xs:documentation>Quantity of the service</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="AssignedTravellers" type="IdentifiersType" nillable="true" minOccurs="0">
      <xs:annotation>
        <xs:documentation>List of traveller identifiers assigned to this service</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="Attributes" type="AttributesType" nillable="true" minOccurs="0" maxOccurs="unbounded">
      <xs:annotation>
        <xs:documentation>List of attributes of this service</xs:documentation>
      </xs:annotation>
    </xs:element>
    <xs:element name="PackageReference" type="IdentifierType" nillable="true" minOccurs="0">
      <xs:annotation>
        <xs:documentation>Reference to a package in case that the current service is part of a package</xs:documentation>
      </xs:annotation>
    </xs:element>
  </xs:sequence>
</xs:complexType>