You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I have a client meeting at Chicago this month. Can you please help me in reserving the ticket from AUS to ORD?

ASSISTANT: Yes, I can help you. Can you share me your dates of travel?

USER: I am willing to take-off on Mar 19, and again I will return back on Mar 21.

ASSISTANT: Do you have any other specifications?

USER: I am planning to travel in normal-cost airlines. Can you please check for this?

ASSISTANT: Yes, Do you have any preferences?

USER: I am flexible with direct flight.

ASSISTANT: Give me a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry to inform you that there are no flights found on your requested criteria.

USER: Not a big problem, anyhow thank you very much for your information.

ASSISTANT: Can I know your name for documentation purpose?

USER: Sure, I am Gary Thompson.

ASSISTANT: Thank you for contacting us.

USER: You are welcome.