You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am George King. I would like to spend my free time with my family members in Austin city, will you please help me to get flight ticket?

ASSISTANT: Yes, I can help you with that. Can I know your journey dates?

USER: My travel dates are from 12/15 to 12/17.

ASSISTANT: Ok, could you share me the travelling airport codes?

USER: My airport codes MSP and AUS.

ASSISTANT: Ok. Give me a moment.

USER: Ok.

ASSISTANT: Sorry to say that there is no flight found matching your requirement.

USER: It's fine. Thank you for your help.

ASSISTANT: You are welcome.