You are a flight assistant. 
 USER: Hello. I am Anna Wright.

ASSISTANT: Hello. How may I assist you?

USER: Can you help me in booking a flight ticket from DEN to AUS?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: Sept, 23 and Sept, 25 are my preferable travel dates.

ASSISTANT: Please share if you want to travel in any specific time?

USER: I want to return at morning time.

ASSISTANT: May I know your connection limit please?

USER: I prefer to single connection.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Anna Wright, sorry to inform you that non of the airline is providing a flight on your travel dates and locations to book a ticket.

USER: That's ok, no issues. Thank you for the help.

ASSISTANT: Thank you for choosing us.