You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I would like to travel from AUS to IAD. Can you please help me?

ASSISTANT: Sure, I will aid you with that. Can you please mention your preferable travel dates?

USER: My travel dates are from 06/26 to 06/28.

ASSISTANT: May I know your name for further process?

USER: Myself Joshua King.

ASSISTANT: Do you have any another specifications?

USER: I want a single connection.

ASSISTANT: Ok, please hold on a moment.

USER: Ok.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us.