You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from my side?

USER: Please book me a ticket from AUS to DFW as my meeting purposes.

ASSISTANT: Sure, I am oblige to help you and may I know your preferable travel dates?

USER: I have planned to travel on Nov 09th and return on Nov 11th.

ASSISTANT: Can I know your connection limit preference?

USER: I prefer direct flight.

ASSISTANT: Do you have any airline preference?

USER: I am ok with any flight but I like economy class.

ASSISTANT: May I know your name please?

USER: Myself Virginia Evans.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: Sorry to inform you that there is no flight obtained on your travel dates to book a flight ticket.

USER: Ok, no problem.

ASSISTANT: You are welcome and thank you for reaching us.

USER: Thank you.