Hi.
user
Hello. How can I  help you?
assistant
I would like to travel Washington to meet my niece, can you help me to book a flight ticket from JFK to IAD?
user
Your travelling dates please?
assistant
Ok, my travelling dates are from 02/19 to 02/21.
user
May I know your name please?
assistant
Ok, my name is Kevin Thompson.
user
I am sorry no flights found on your route.
assistant
No problem, thank you for your help.
user
Thank you for choosing us.
assistant