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

Example Input: Sentence: 'a person flying through the air on the kite board'. Replace the letter 'h' with 'l' in the sentence.
Example Output: a person flying tlrougl tle air on tle kite board

Example Input: Sentence: 'a couple of kids with rackets on a court'. Replace the letter 'u' with 'd' in the sentence.
Example Output: a codple of kids with rackets on a codrt

Example Input: Sentence: 'a white and black stove with a pot and spoon on it'. Replace the letter 'o' with 'p' in the sentence.
Example Output:
a white and black stpve with a ppt and spppn pn it