Just use the "Equals Current User" condition
and this is the corresponding fetchxml
<fetch version="1.0" output-format="xml-platform" mapping="logical" distinct="false">
<entity name="quote">
<attribute name="name" />
<attribute name="customerid" />
<attribute name="statecode" />
<attribute name="totalamount" />
<attribute name="quoteid" />
<attribute name="createdon" />
<order attribute="name" descending="false" />
<filter type="and">
<condition attribute="createdby" operator="eq-userid" />
</filter>
</entity>
</fetch>
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