Rewrite the following sentence to convey the same message in a more formal style.
I'm gonna go shopping today.
I have planned to engage in shopping activities today.
Complete the following task based on the instruction and optional input provided.### Instruction:
Rewrite the following sentence to convey the same message in a more formal style.

### Input:
I'm gonna go shopping today.

### Output:
I have planned to engage in shopping activities today.