Hi.
user
Hello. How can I  help you?
assistant
I want to book a flight ticket from DCA to LAS, can you help me with booking please?
user
Your travelling dates please?
assistant
  I need to travel on dates Sept 08 and Sept 10.
user
Do you have any specifications?
assistant
I am looking for a normal cost airline.
user
What about connection limit?
assistant
I need a connecting flight.
user
May I know your name please?
assistant
My name is Barbara Wright.
user
I am sorry no flights found on your route.
assistant
That's ok, thank you for the response.
user
Thank you for choosing us.
assistant