You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you at this moment?

USER: I am Brian Edwards. I planned to attend for a wedding in AUS, can you please help me to book a flight ticket from ORD?

ASSISTANT: Sure, I am here to help you with that. Can I have your travelling dates?

USER: I prefer to travel on 09/04 and 09/06. I need a direct flight.

ASSISTANT: Please wait for a minute, so that I will check the flight availability.

USER: Sure.

ASSISTANT: Sorry to say that, there are no flight's available based on your travelling dates.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your time.