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