Given a dialogue, identify the sentiment as positive or negative. Output "positive" or "negative".
Person A: That was the worst experience ever.
Person B: I'm so sorry to hear that.
negative
Complete the following task based on the instruction and optional input provided.### Instruction:
Given a dialogue, identify the sentiment as positive or negative. Output "positive" or "negative".

### Input:
Person A: That was the worst experience ever.
Person B: I'm so sorry to hear that.

### Output:
negative