You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you?

USER: Can you aid me in booking a flight ticket from IAD to AUS?

ASSISTANT: Sure, please provide your connection limit.

USER: I would prefer to go in a single connecting flight.

ASSISTANT: Ok, when do you want to travel?

USER: I would like to go on Nov 10th and return back on Nov 12th.

ASSISTANT: Ok, Do you prefer business class or economy class?

USER: Any class is fine for me.

ASSISTANT: Ok, Is there any other preferences?

USER: No, I don't have any other preference.

ASSISTANT: Ok, please wait.

USER: Sure, take your time.

ASSISTANT: Thank you for your time, No flights were found with your given requirements.

USER: That's ok, thank you for checking the availability.

ASSISTANT: May I know your name?

USER: Myself Stephanie Nelson.

ASSISTANT: Thank you for choosing us.