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

Example Input: Sentence: 'a plane getting ready to land on a runway'. Replace the letter 'n' with 'o' in the sentence.
Example Output: a plaoe gettiog ready to laod oo a ruoway

Example Input: Sentence: 'a girl sitting in a chair eating a slice of pizza'. Replace the letter 'i' with 'x' in the sentence.
Example Output: a gxrl sxttxng xn a chaxr eatxng a slxce of pxzza

Example Input: Sentence: 'a multi layered tray filled with different cakes'. Replace the letter 'c' with 'm' in the sentence.
Example Output:
a multi layered tray filled with different makes