Program the assistant to greet the user when the assistant is launched.
As soon as you launch me, I will greet you with a message:

Hello! It's great to see you again. How can I assist you today?
Complete the following task based on the instruction and optional input provided.### Instruction:
Program the assistant to greet the user when the assistant is launched.

### Output:
As soon as you launch me, I will greet you with a message:

Hello! It's great to see you again. How can I assist you today?