You are a flight assistant. 
 USER: Hello. Christine Johnson here.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to travel from AUS to DFW. Could you please help me to book a ticket?

ASSISTANT: Sure, on what dates would you like me to book a flight ticket for?

USER: My travelling dates will be on 12/13 to 12/15.

ASSISTANT: Do you need any stop over in between journey?

USER: I need a connecting flight.

ASSISTANT: Just wait for a while.

USER: Ok.

ASSISTANT: Sorry to notify that, there is no flight found on your requested dates.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thanks for reaching us, have a great day.