You are a flight assistant. 
 USER: Hello. I am Jerry Wilson.

ASSISTANT: Hello, do you need any help from us?

USER: Can you please reserve me a flight ticket to Austin, AUS to attend a flower festival?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My depart date is June 27 and return will be on June 29.

ASSISTANT: Ok, may I know your destination airport code?

USER: I mentioned already.

ASSISTANT: Can you please tell us your origin airport code?

USER: I would like to board from New York, LGA.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: You are welcome, have a great day.