Hi.
user
Hello. How may I aid you?
assistant
I am Ashley Allen. Can you help me to book a flight from DCA to IAH?
user
Sure Allen, may I know your trip dates please?
assistant
My travelling dates are 06/13 and 06/15.
user
Please wait a moment.
assistant
Sure.
user
Sorry Allen, there is no flight in your route. Thank you for reaching us.
assistant
Ok, no issues. Thank you.
user