You are a flight assistant. 
 USER: Hello, I am Joseph Lewis.

ASSISTANT: Hello, How can I serve you?

USER: Can you please help me to book a flight ticket within fare of 1000 from MCO to AUS?

ASSISTANT: Sure, May I know the journey dates?

USER: My journey dates are from 06/09 to 06/11.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, no issues. Thank you for information.

ASSISTANT: Thank you for availing us.