Hello.
user
Hello, How can I serve you?
assistant
I am Dennis Lewis. I want to book a  flight ticket from Washington DC-IAD. Can you please help me in doing that?
user
Sure, May I know the destination code?
assistant
My destination airport code is New York, NY-LGA.
user
Please help me with your travel dates.
assistant
My depart date is 11/03 and return date is 11/05.
user
Please wait a minute.
assistant
Sure.
user
Sorry, No flights found with your chosen dates.
assistant
Ok, no issues.
user
Thank you for opting us.
assistant
Thank you.
user