Hi.
Hello, how may I aid you today from my end?
Can you please help me in booking my flight ticket from DEN to IAH?
Sure, I am here to help you out. Please provide me your trip dates.
My trip dates are Dec 23 and Dec 25.
May I know your name to proceed further?
Myself Matthew Edwards.
Do you have any connection limit?
I need direct flight.
May I know your class limit?
I need economy class ticket.
Please allow me a moment.
Ok.
Sorry  Matthew Edwards, there is no flight on your route in our agency.
Ok, thanks for your information.
Thank you for reaching us.