regex101: Multiple PNR extract from file

Regular Expression

(?ms)<PNR>([\w]+)<\/PNR>

Test String
New

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<EGE_Booking>
    <TripID>1004-3637-360</TripID>
    <RecordLocator>1004-3637-360</RecordLocator>
    <Travelers>
        <Traveler>
            <PerCode>13593199</PerCode>
            <FirstName>Claude</FirstName>
            <LastName>Christensson</LastName>
            <ContactDetails>
                <Email>claude.christensson@wirelesscar.com</Email>
                <MobilePhone>46765537005</MobilePhone>
            </ContactDetails>
            <TravellerCostCenter>
                <CostCenter Code="CC3">
                    <Label>Employee ID</Label>
                    <Value>56524</Value>
                </CostCenter>
                <CostCenter Code="CC4">
                    <Label>Global Department code</Label>
                    <Value>DI43400</Value>
                </CostCenter>
            </TravellerCostCenter>
        </Traveler>
    </Travelers>
    <Segments>
        <HotelSegment>
            <HOTEL>
                <TripItemID>5a7dc8f971ac0163f7563e7e</TripItemID>
                <PNR>ABC1DS</PNR>
                <Status>V</Status>
                <CheckInDate>2018-02-13</CheckInDate>
                <CheckOutDate>2018-02-14</CheckOutDate>
                <Vendor SupplierType="11281422">Genting Hotel</Vendor>
                <PropertyName>Genting Hotel</PropertyName>
                <Location>
                    <Name>Pendigo Way, England, B40 1PU</Name>
                    <City>Birmingham</City>
                    <Country Code="GBR">Storbritannien</Country>
                </Location>
                <ConfirmationCode>982674693</ConfirmationCode>
                <Cost>
                    <Amount>751.08</Amount>
                    <Currency Code="SEK">Swedish Krona</Currency>
                </Cost>
                <OutOfPolicyReasons/>
            </HOTEL>
            <HOTEL>
                <TripItemID>5a7dc8f971ac0163f7563e7e</TripItemID>
                <PNR>55545261643</PNR>
                <Status>V</Status>
                <CheckInDate>2018-02-13</CheckInDate>
                <CheckOutDate>2018-02-14</CheckOutDate>
                <Vendor SupplierType="11281422">Genting Hotel</Vendor>
                <PropertyName>Genting Hotel</PropertyName>
                <Location>
                    <Name>Pendigo Way, England, B40 1PU</Name>
                    <City>Birmingham</City>
                    <Country Code="GBR">Storbritannien</Country>
                </Location>
                <ConfirmationCode>982674693</ConfirmationCode>
                <Cost>
                    <Amount>751.08</Amount>
                    <Currency Code="SEK">Swedish Krona</Currency>
                </Cost>
                <OutOfPolicyReasons/>
            </HOTEL>
        </HotelSegment>
    </Segments>
    <Invoicing>
        <CompanyCode>28781</CompanyCode>
        <ClientNumber>28781</ClientNumber>
        <ClientRequisition>claude.christensson@wirelesscar.com</ClientRequisition>
        <ClientReference>689100277</ClientReference>
        <ClientCostCenter>
            <CostCenter Code="CC1">
                <Label>Legal Entity</Label>
                <Value>WirelessCar Sweden AB</Value>
            </CostCenter>
            <CostCenter Code="CC2">
                <Label>Cost Center</Label>
                <Value>989502</Value>
            </CostCenter>
        </ClientCostCenter>
    </Invoicing>
</EGE_Booking>

Regular Expression

Test StringNew

Test String
New