Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.

### Instruction:
Choose the best password for a given service.

### Input:
Online banking

### Response:
The best password for online banking is one that is long and complex, contains a mix of letters, uppercase and lowercase letters, numbers, and symbols, and is unique to the service. It should also be changed regularly to help ensure the highest level of security.