USPS Tracking API Expected Delivery Date?

I am integrating USPS tracking API into my current project and need some help getting all the tracking info. Basically, my requests are done by the following URL:

http://production.shippingapis.com/ShippingAPI.dll?API=TrackV2&XML=<TrackRequest USERID="My-ID"><TrackID ID="9400110200882198420715"></TrackID></TrackRequest>

This request(once I input my correct ID) returns a XML page containing a summary, tracking id, and package's locations, but it doesn't have any tags regarding the expected delivery date (the tracking id used has one). My question is how do I get the expected delivery info to show up on the XML? I am certain there should be a way to get that info as other companies like Amazon and eBay have a "expected delivery date" along with all the tracking info. I tried reading the USPS manual(https://www.usps.com/business/web-tools-apis/track-and-confirm.pdf) on the API but it doesn't really explain well. If anyone can make sense of it and help me out, I would be highly grateful.

The expected delivery date is available through "TrackFieldRequest"

Example Request

<TrackFieldRequest USERID="xxxxxxxx">
<Revision>1</Revision>
<ClientIp>127.0.0.1</ClientIp>
<SourceId>John Doe</SourceId>
    <TrackID ID="010850921250125054">
        <DestinationZipCode>12345</DestinationZipCode>
        <MailingDate>2010-01-01</MailingDate>
   </TrackID>
</TrackFieldRequest>

Example Request Response

<?xml version="1.0" ?>
<TrackResponse>
     <TrackInfo ID="9102969010383081813033">
         <ExpectedDeliveryDate>March 9, 2012</ExpectedDeliveryDate>
          ...
     </TrackInfo>
</TrackResponse>

Source: https://www.usps.com/business/web-tools-apis/track-and-confirm.htm#_Toc378923168