Detect the tone of the following statement and classify it as sad, happy or neutral.
I am so grateful for your help.
The tone of the statement is happy. It shows gratitude and appreciation.
Complete the following task based on the instruction and optional input provided.### Instruction:
Detect the tone of the following statement and classify it as sad, happy or neutral.

### Input:
I am so grateful for your help.

### Output:
The tone of the statement is happy. It shows gratitude and appreciation.