You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I am Patrick Scott. I would like to visit Lyndon Baines Johnson Library and Museum at Austin, AUS. Can you please help with book a flight ticket from Chicago?

ASSISTANT: Sure, I would be happy to help you.

USER: Thank you.

ASSISTANT: When you are willing to travel?

USER: My travelling dates are 07/12 to 07/14.

ASSISTANT: Can you help me with your source code?

USER: My source code is IL - ORD.

ASSISTANT: Do you have any specifications?

USER: I need single connection of flight.

ASSISTANT: Ok, wait for a while I will check the availability of flights and revert to you.

USER: Sure.

ASSISTANT: Sorry, we found no flights with your specifications.

USER: OK, no problem, thank you for the information.

ASSISTANT: Thank you for reaching us.