You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Brenda Turner. Could you please help me in booking a flight ticket which is having a connection limit 0?

ASSISTANT: Sure, I will help you out.

USER: Thank you.

ASSISTANT: May I know your travelling dates please?

USER: The travelling dates are 12/27 and 12/29.

ASSISTANT: Can I know your airport codes please?

USER: The airport codes that I prefer to travel are from AUS to DEN.

ASSISTANT: Ok, please wait moment.

USER: Ok, take your time.

ASSISTANT: Sorry, there are no flights found.

USER: It's ok, not a  problem. Thank you for helping me.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.