You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I am Edwards Williams. I am planning to book a ticket from ORD to AUS. Can you please help me out?

ASSISTANT: Sure, I am here to help you with that. Can I know your travelling dates?

USER: I would like to travel on 11/14 and return back on 11/16.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Sorry to say that, there are no flight's available based on your travelling dates.

USER: That's fine.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your service.