Identify the speaker's tone as positive, negative or neutral.
"This project is an important milestone for us and we should celebrate it!"
The speaker's tone is positive.
Complete the following task based on the instruction and optional input provided.### Instruction:
Identify the speaker's tone as positive, negative or neutral.

### Input:
"This project is an important milestone for us and we should celebrate it!"

### Output:
The speaker's tone is positive.