Hello.
user
Hello, how may I aid you?
assistant
I want to travel from AUS to IAD. Can you help me to book a flight ticket?
user
Sure, could you please provide your travelling dates to search for the flight?
assistant
I want to fly in the flight on Oct 17 and Oct 19.
user
Do you have any requirements?
assistant
I prefer to travel in business class.
user
Can I have your name?
assistant
I am William White.
user
Do you have any time concern?
assistant
No.
user
Sorry to say, no flight is available for you as per your requests.
assistant
That's ok. Anyways, thank you for your help.
user
Thank you for reaching us.
assistant