Hello.
user
Hello, how may I assist you?
assistant
Can you please book a flight ticket from ORD to IAD?
user
Sure, may I know your planned travel dates please?
assistant
Thank you. I have planned my travel dates as June 07 and June 09.
user
Would you like to travel in a connecting flight or a direct flight?
assistant
I am looking for single connecting flight.
user
May I know your good name please?
assistant
Sure, myself Ronald Green.
user
Sorry, there is no flight available on your requested dates.
assistant
Oh! It is sad to  hear. Anyway, thank you for your time.
user
Thank you for reaching us.
assistant
Most welcome.
user