Hello.
user
Hello. How may I assist you?
assistant
I am looking to book a flight ticket under the name David Harris, will you help me to find a flight ticket?
user
I can help you with that. May I know your airport codes?
assistant
My travelling airport codes are IAD and DEN.
user
Can I have your trip dates to find a flight for you?
assistant
My trip dates are 07/10 and 07/12.
user
According to your information, there is no flight for you.
assistant
It's ok, thank you for checking  the flights.
user
Thanks for reaching us.
assistant