Hi.
user
Hello, how may I serve you  at this moment?
assistant
I would like to book a flight ticket to Dallas to take a part in scuba driving, could you please help me to book a flight ticket with single connection?
user
Sure, can you please let me know your journey dates?
assistant
Sure, I am planning to start my journey on Feb 23rd and I'll return within two days that is on Feb 25th.
user
Kindly assign your source and destination airport codes?
assistant
I want to start my journey from DCA and my landing airport code is DFW.
user
Is there any more specification do you need?
assistant
I prefer to fly in economy class.
user
May I know your name please?
assistant
I am Nicole Smith.
user
Ok, please wait for a while.
assistant
Sure.
user
Sorry to inform you that, we did not find any flights matching your journey dates.
assistant
That's ok, I'll choose any alternative to reach my destination. Thank you for your information.
user
Thank you for approaching us.
assistant