You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I want to book a flight ticket from AUS to DEN. Could you help me in booking?

ASSISTANT: Sure, could you please provide your journey dates?

USER: My travelling dates are from July 26 - 28.

ASSISTANT: Are you looking for any preferred connections?

USER: I prefer for direct flight.

ASSISTANT: Do you have any other specifications to be met?

USER: My return time should be in the morning.

ASSISTANT: May I know your name to proceed?

USER: Sandra Anderson.

ASSISTANT: Ok, please wait a minute.

USER: Ok.

ASSISTANT: Thank you for your valuable time, unfortunately no flights available on that route.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.