You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I want to book my ticket from Denver. Can you please help me with booking a flight ticket from DEN to AUS?

ASSISTANT: Sure, May I know the travelling dates?

USER: Sure, my travel dates are from Apr 06 to Apr 08.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connecting flight in my journey.

ASSISTANT: Is there any other requirements?

USER: No, I din't  have any other requirements.

ASSISTANT: May I know your name?

USER: My name is Joseph Hill.

ASSISTANT: Please wait a moment.

USER: Sure, I will wait for your response.

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

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

ASSISTANT: Thank you for opting us.