Hello.
user
Hello. How may I assist you?
assistant
Can you please help me to book a flight ticket from IAH to DCA?
user
Sure, I am here to help you out. May I know your travelling dates please?
assistant
My travelling dates are Feb 14 to Feb 16.
user
Can you please share your connection limit?
assistant
I need a single connection of flight.
user
Is there any class preference?
assistant
No.
user
May I know your name please?
assistant
Nicholas Edwards.
user
Do you have any specifications?
assistant
I prefer to fly in big brand airlines.
user
Nicholas Edwards,  there are no flights available in your route.
assistant
No problem, thanks for your information.
user
Thank you for reaching us.
assistant