Hello.
user
Hello. How can I help you?
assistant
I am Dennis Collins. I want to book a flight from IAD to CLT. Could you help me ?
user
Sure, I will help you with that. May I know your travelling dates for booking?
assistant
My travel starts on 07/27 and return back on 07/29.
user
Ok, please wait for a moment.
assistant
Sure, take your time.
user
Sorry to tell you, there are no flights available as per your travel dates?
assistant
That's ok, no problem.
user
Thank you for reaching us, have a nice day.
assistant
Thank you for helping me.
user