Please capitalize where necessary: if you've booked a lowfare+ or flex ticket, the economy menu is included for your flight.
A: If you've booked a LowFare+ or Flex ticket, the Economy menu is included for your flight.

Q: though our sins give witness against us, do something, o lord, for the honour of your name: for again and again we have been turned away from you, we have done evil against you.

A: Though our sins give witness against us, do something, O Lord, for the honour of your name: for again and again we have been turned away from you, we have done evil against you.

Q: this entity constitutes the true living being behind the mental and physical areas of the organism.
A: This entity constitutes the true living being behind the mental and physical areas of the organism.

Problem: obsessive compulsive disorder, better known as ocd, as described by the national institute of mental health (nimh), is an anxiety disorder that is characterized by recurrent, unwanted thoughts (obsessions) and/or repetitive behaviors (compulsions).
Can you repeat this sentence, but capitalize it?
Answer: Obsessive Compulsive Disorder, better known as OCD, as described by The National Institute of Mental Health (NIMH), is an anxiety disorder that is characterized by recurrent, unwanted thoughts (obsessions) and/or repetitive behaviors (compulsions).

Text: from the beginning of the installation of the pvc profiles to the final installation of the solar element the roof stays waterproof.

Correct capitalization: From the beginning of the installation of the pvc profiles to the final installation of the solar element the roof stays waterproof.

Please capitalize where necessary: everywhere in the old world and all along to recent times it was quite normal, that groups of people with different languages, religions, and cultures, were ruled by a foreign grand sovereign.
A:
Everywhere in the old world and all along to recent times it was quite normal, that groups of people with different languages, religions, and cultures, were ruled by a foreign grand sovereign.