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

Example Input: Sentence: 'a street side tree is filled with candles, teddy bears and balloons'. Replace the letter 'e' with 'c' in the sentence.
Example Output: a strcct sidc trcc is fillcd with candlcs, tcddy bcars and balloons

Example Input: Sentence: 'a kitchen table with a juicer and vegetable on it'. Replace the letter 't' with 'a' in the sentence.
Example Output: a kiachen aable wiah a juicer and vegeaable on ia

Example Input: Sentence: 'a powder blue car parked in parking lot'. Replace the letter 'i' with 'c' in the sentence.
Example Output:
a powder blue car parked cn parkcng lot