You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Jonathan Adams here. I am willing to book a flight ticket with a cost of 200.

ASSISTANT: Ok, please share your journey airport codes.

USER: Yes, my source code is AUS and destination code is MCO.

ASSISTANT: Can I know your travel dates?

USER: My travelling dates are 08/05 and 08/07.

ASSISTANT: Adams, there is no flight available on your requested dates.

USER: Not an issue, anyway thank you for the information.

ASSISTANT: You are welcome.