Please solve the programming task below using a self-contained code snippet in a markdown code block.

Given two strings s and goal, return true if you can swap two letters in s so the result is equal to goal, otherwise, return false.
Swapping letters is defined as taking two indices i and j (0-indexed) such that i != j and swapping the characters at s[i] and s[j].

For example, swapping at indices 0 and 2 in "abcd" results in "cbad".

 
Please complete the following python code precisely:
```python
class Solution:
    def buddyStrings(self, s: str, goal: str) -> bool:
```