Hello.
user
Hello, how may I render you?
assistant
Can you please help me to book a flight ticket from DCA to PHX?
user
Sure, please provide your itinerary dates.
assistant
My travelling dates are May 22 to May 24.
user
Which class do you prefer?
assistant
I prefer economy class.
user
May I know your name?
assistant
Angela Davis.
user
Sorry Angela Davis, no flights are available on your route.
assistant
Ok, no problem. Thank you.
user
Thank you for reaching us.
assistant