You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: Myself Ronald Jackson. I am planning to visit Austin city, can you help me in booking the flight ticket from AUS to DEN?

ASSISTANT: Sure, I am blissful to help you out. Please provide me your trip dates.

USER: Sure, my travel dates are 04/10 and 04/12.

ASSISTANT: Sorry Ronald Jackson, no flight in your route with your travel dates.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.