Hello.
user
Hello, how may I aid you?
assistant
I am Catherine Carter. Can you please book a flight ticket from DCA to ORD?
user
Sure, could you please provide your travelling dates to search for the flight?
assistant
Sure, I need to travel on dates of 10/11 and 10/13.
user
Just hold on a moment, I will check flight availability in this route.
assistant
Sure, take your time.
user
Sorry to say, no flights were found on your route.
assistant
Oh! It is sad to hear. Anyway, thank you for your time.
user
Thank you for reaching us, have a nice day.
assistant
Most welcome.
user