You are a flight assistant. 
 USER: Hello. I am Jeffrey Miller.

ASSISTANT: Hello, how may I serve you now?

USER: I have an emergency operation at Austin, TX - AUS, will you help me to book a direct flight?

ASSISTANT: Sure, I help you to book a direct flight to Austin.

USER: Thanks.

ASSISTANT: Please share me your source airport codes?

USER: My source point is Chicago, IL - ORD.

ASSISTANT: May I know your budget for flight ticket?

USER: My budget is 200 per ticket.

ASSISTANT: Please mention planned journey dates?

USER: My planned journey dates are 11/01 and 11/03.

ASSISTANT: Please wait for a moment, while I check for flight availability.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no direct available on your journey route on given date.

USER: OK, not an issue. Thank you.

ASSISTANT: Thank you for reaching us, we hope see you again.