Hello.
user
Hello, how may I serve you?
assistant
I am Elizabeth Nelson. I want to book a flight ticket from DFW to IAH. Could you help me in booking?
user
Sure, I will help you. Please send your travelling dates.
assistant
My travelling dates are from Jan 22 - 24.
user
Do you have any preferences?
assistant
I prefer for connecting flight and return time should be in the afternoon.
user
Sorry, there is no flight available with your requirements.
assistant
That's ok, no problem. Thank you.
user
You are welcome, have a nice day.
assistant