(Bloomberg) -- American Express Co. and Delta Air Lines Inc. are revamping their co-branded credit cards to offer new rewards and benefits that target both frequent fliers and everyday spenders who frequently charge meals at restaurants and trips through ride-share services.Most Read from BloombergDonald Trump Loses London Case Against Ex-MI6 Spy Over Kremlin DossierA $560 Billion Property Warning Hits Banks From NY to TokyoDeutsche Bank Plans To Cut 3,500 Jobs And Lift PayoutsHouse Passes $78 B