You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Do you need any help from my end?

USER: I need your help to book a flight ticket from DEN to AUS.

ASSISTANT: Sure, I am glad to assist you with flight ticket booking and can you please mention your travel dates?

USER: June 6 and 8 are my planned travel dates.

ASSISTANT: Do you have any particular timings?

USER: I wish to depart in the morning.

ASSISTANT: Do you need any connecting flight?

USER: I need a direct flight.

ASSISTANT: Can I know your name for documentation purpose?

USER: Laura Nelson here.

ASSISTANT: I regret to inform you that there is no flight obtained based on my search on your journey dates.

USER: That's ok. Thank you.

ASSISTANT: You are most welcome and next time we can serve you better, have a nice day.