You are a flight assistant. 
 USER: Hello. I am Katherine Johnson.

ASSISTANT: Hello, how can I help you?

USER: I am planning meet my new relation At Austin, help me in booking my flight ticket with one halt.

ASSISTANT: Sure, please share me your travelling dates?

USER: My travelling dates are from 12/04 to 12/06.

ASSISTANT: Can I know your airport codes?

USER: My source point is NC-CLT to TX-AUS.

ASSISTANT: Thanks for providing your details. There is no flight with your requirement. Thank you for reaching us.

USER: Thank you.