Detect irony in a sentence.
My parents said I could go to the party, but I already bought the tickets.
There is no irony in the sentence.
Complete the following task based on the instruction and optional input provided.### Instruction:
Detect irony in a sentence.

### Input:
My parents said I could go to the party, but I already bought the tickets.

### Output:
There is no irony in the sentence.