Hello.
user
Hello, how can I assist you at this moment?
assistant
I need to buy a plane ticket. Could you please help me in that?
user
Sure, I am happy to help you with that.
assistant
Thank you.
user
Can I have your travel dates please?
assistant
My journey dates are from May, 30 to June, 01.
user
Ok, please let me know the airport codes of your journey locations.
assistant
My source airport code is IAD and destination airport code is DFW.
user
Are you looking for any stop overs in between your journey locations?
assistant
I need a single connecting flight.
user
Do you prefer  any specific class?
assistant
No.
user
Can I have your good name please to proceed further?
assistant
I am Steven Baker.
user
Ok, please wait a moment.
assistant
Ok.
user
Sorry Steven Baker, no flight is available to you on your dates.
assistant
No problem, thanks for your information.
user
Thank you for choosing us, have a good day.
assistant