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

Example Input: Sentence: 'kites flying over a woman wearing a hat'. Replace the letter 'i' with 'j' in the sentence.
Example Output: kjtes flyjng over a woman wearjng a hat

Example Input: Sentence: 'the airplane is parked on the runway for people to look at'. Replace the letter 'a' with 'e' in the sentence.
Example Output: the eirplene is perked on the runwey for people to look et

Example Input: Sentence: 'a large group in the front row are on their laptops'. Replace the letter 'l' with 'z' in the sentence.
Example Output:
a zarge group in the front row are on their zaptops