You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can we help you?

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

ASSISTANT: Sure, may I know your trip dates?

USER: My trip dates are from Nov 20th to Nov 22nd.

ASSISTANT: Do you have any connection limit preference?

USER: Yes, I need a single connection in between my journey.

ASSISTANT: Could you help me with your name please?

USER: I am Dorothy Lewis.

ASSISTANT: Sorry, there is no flight available for the mentioned dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.