Hi.
Hello. How can I aid you?
I am Dennis Mitchell.
Ok.
 I want to book a flight to Denver to bring back my certificates from my university, can you help me in my booking?
Sure, I can help you.
Ok.
Can I know your travelling dates?
My journey dates are from 11/13 to 11/15.
Please share me your nearest airport codes.
My journey airport codes are from IAH to DEN.
We found a  Delta airline, flight number:1000 and the price is 100.
Proceed with my booking.
Your flight ticket has been reserved.
Thank you for your help.
Thank you for contacting us.