You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you for today?

USER: Please help me out in booking the connected flight ticket from AUS to DEN.

ASSISTANT: I am happy to help you about that. Can you please let me know your scheduled dates of journey?

USER: My trip dates will be May 30 to Jun 1.

ASSISTANT: Do you have any other specific timings for your trip at the time of departure and arrival please let me know?

USER: My depart time must be in the afternoon.

ASSISTANT: Is there any other requirement for your journey to met with in order to search a suitable flight for your journey?

USER: I want a ticket in economy class.

ASSISTANT: Can you please let me know your name for reservation purpose?

USER: Frank Smith is my name.

ASSISTANT: Sorry Frank Smith, I am not able to find even a single flights which travels to your region on your planned dates of journey.

USER: That's ok, thank you for informing.

ASSISTANT: You are welcome, thank you for reaching us.