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

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 bus parked on the side of the road'. Replace the letter 'o' with 'd' in the sentence.
Example Output: a bus parked dn the side df the rdad

Example Input: Sentence: 'tables are set up under a canopy and people are approaching the tables'. Replace the letter 'r' with 'i' in the sentence.
Example Output:
tables aie set up undei a canopy and people aie appioaching the tables