In this task, you need to replace a letter in the sentence with another given letter.

Example Input: Sentence: 'the kitchen has a big screen tv and a lot of counter space'. Replace the letter 'h' with 'z' in the sentence.
Example Output: tze kitczen zas a big screen tv and a lot of counter space

Example Input: Sentence: 'this is a bathroom found in a hotel'. Replace the letter 'h' with 's' in the sentence.
Example Output: tsis is a batsroom found in a sotel

Example Input: Sentence: 'a vase with three red tulips in it'. Replace the letter 'i' with 'p' in the sentence.
Example Output:
a vase wpth three red tulpps pn pt