You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I'm planning to visit Disney world, can you please book a ticket from AUS to IAD?

ASSISTANT: May I know your name?

USER: My name is Sarah Scott.

ASSISTANT: Please share your trip dates.

USER: I would like to depart from my source location on 26th Jan and I want to return back by 28th Jan.

ASSISTANT: Do you prefer any connections?

USER: I want to return in the afternoon time and I need single connected flight.

ASSISTANT: May I know your specifications?

USER: I already specified.

ASSISTANT: Sorry to inform you that unfortunately there is no flights available by the given details.

USER: Oh! That's ok, thank you for giving the information anyways.

ASSISTANT: Thank you.