question: check rates and availability for hotel barbacan. then proceed to booking.
Capitalize this past sentence correctly.
A: Check rates and availability for Hotel Barbacan. Then proceed to booking.

question: this sounded promising, certainly: alice turned and came back again.
Capitalize this past sentence correctly.
A: This sounded promising, certainly: Alice turned and came back again.

question: -albrecht müller, economist, former campaign manager of willy brandt and head of alternative news portal nachdenkseiten.
Capitalize this past sentence correctly.
A: -Albrecht Müller, Economist, former campaign manager of Willy Brandt and head of alternative news portal NachDenkSeiten.