QUESTION: Fix punctuation: Facebook Mobile Your conversations are moving to Messenger xComputer
ANS: Facebook Mobile: Your conversations are moving to Messenger | xComputer

QUESTION: Fix punctuation: People in the Mesolithic period were shorter than today
ANS: People in the Mesolithic period were shorter than today.

QUESTION: Fix punctuation: Group rates and group bookings and Cruises with Celebrity Century and Celebrity Xpedition are excluded from this Special Reclassifications Cancellation bookings or canceled options can not be considered
ANS: Group rates and group bookings, and Cruises with Celebrity Century and Celebrity Xpedition are excluded from this Special. Reclassifications, Cancellation / bookings or canceled options can not be considered.

QUESTION: Fix punctuation: Check rates and availability for Noob Hostel Then proceed to booking
ANS:
Check rates and availability for Noob Hostel. Then proceed to booking.