Hello.
user
Hello. How can I help you?
assistant
I am Carol Adams, can you help me to book a flight ticket from IAD to AUS?
user
Sure, may I know your travel dates please?
assistant
Ok, my travel dates are 02/22 and 02/24 respectively.
user
Carol, there are no flights available for you on those dates.
assistant
Ok, no problem. Thank you for assisting me.
user
Thank you for choosing us.
assistant