JSF :: Dialog Inside Datatable With Button Displays Wrong Variable Value

I have a bookings table where customers can view their bookings and in the table there is a button with a command button that onclick goes to the dialogue to display the variable petUpdate value but if you have 2 bookings then all the update buttons display the value of the last petUpdate in the arrayList.

DataTable with the button

<p:dataTable
id="bookingTable"
var="customerBooking"
value="#{booking.sessionBookingList}"
editable="true"
style="margin:0px 0px 20px 100px;font-size:15px;width:600px;"
>

Code in the above datatable.......The commented out output label displays the correct value for each but when the button is clicked the dialog only displays the last ones value

<p:column headerText="Check Updates" style ="width:50px;">
<!-- <h:outputLabel value="#{customerBooking.petUpdate}"></h:outputLabel> -->
<p:dialog header="#{customerBooking.petName}'s Status" widgetVar="dlg1" minHeight="60" minWidth="60" maxWidth="60">
<h:outputText value="#{customerBooking.getPetUpdate()}" />
</p:dialog>
<p:commandButton value="?" onclick="PF('dlg1').show();" style ="width:40px;">
</p:commandButton>
</p:column>