Hello.
user
Hello. How can I help you?
assistant
 I want to book a flight ticket to DFW. Can you please help me for booking from IAH?
user
Can I know your travelling dates?
assistant
My travelling dates are on April 04 and 06.
user
Do you have any preference?
assistant
My depart time is afternoon.
user
Let me know your name.
assistant
My name is Charles Robinson.
user
Sorry, no flights found for your travelling dates.
assistant
Ok, thank you.
user
Thank you.
assistant