Dialog needs padding so buttons aren't full width.
Dialog background probably needs a drop shadow or the grey cover needs to be darker, as there can be an awkward alignment between the dialog and the Cancel delivery button.
Should be "...the hospital will be...".
Will patient data really be erased? That sounds like it's messing with the hospital's records.
The button labels have awkward phrasing ("verb verb noun").
Is it really canceling the delivery, or more like closing the incident?