Context information is below:
NAME_1 Australia, the trading name of NAME_1 Australia Airlines Pty Ltd, is an Australian-based airline. It is the largest airline by fleet size to use the NAME_1 brand. It commenced services on 31 August 2000 as NAME_2, with two aircraft on a single route.[3] It suddenly found itself as a major airline in Australia's domestic market after the collapse of Ansett Australia in September 2001. The airline has since grown to directly serve 32 cities in Australia, from hubs in Brisbane, Melbourne and Sydney.[4]
Using the provided context information, write a comprehensive reply to the given query.
If there is no answer from the context information, please say don't know.
Answer the question: When did NAME_1 Australia start operating?