What is the purpose of writing a thank you letter?
The purpose of writing a thank you letter is to express gratitude towards someone in your life.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is the purpose of writing a thank you letter?

### Input: Not applicable

### Response:
The purpose of writing a thank you letter is to express gratitude towards someone in your life.<|im_end|>