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

ASSISTANT: Hello. How can I aid you?

USER: I would like to travel from ORD to AUS to attending my business meeting. Can you please help me to book a ticket with direct flight?

ASSISTANT: Ok, may I know your travel dates?

USER: My travelling dates will be on 03/19 to 03/21.

ASSISTANT:  Ok, please wait.

USER: Ok.

ASSISTANT: Sorry, no direct flights are available on your specified dates.

USER: Not a problem, thank you for your information.

ASSISTANT:  Thank you for availing us.