You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I would like to travel from AUS to LAS. Can you please help me in ticket booking?

ASSISTANT: Sure, May I know the journey dates?

USER: My trip dates are from 10/15 to 10/17.

ASSISTANT: Do you have any connection limit?

USER: I want a single connection.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: May I know your name?

USER: Myself Katherine Mitchell.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: It's ok, thank you.

ASSISTANT: Thank you for opting us.