Option 1: Modify your value list setup so that column 1 is hidden. Now your value list will only show the airline names. (Airline names must be unique for this to work right.) Change your drop down to a pop-up menu and only the airline name will be displayed.
Option 2: Place AirLines::Name directly on this layout next to your drop down field. If you wish to hide the number, you ca resize the drop-down until only the arrow is visible and place it next to the name field so that it looks like one field. You can use behavior in the Inspector to keep the user from entering the AirLine::Name field while in browse mode so that they don't inadvertantly edit the name of the airline.