You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: John Miller here. Can you please check for the flights from AUS - LGA for my meeting?

ASSISTANT: May I know your desired travel dates please?

USER: My journey dates are from 22nd June to 24th June.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: Oh! That's very sad to know. Anyways, thank you for checking.

ASSISTANT: Thank you for opting us.

USER: Most welcome.