Hello.
user
Hello, how can I aid you?
assistant
I am looking for a flight from IAH to IAD, can you help me?
user
Sure, please provide your trip dates.
assistant
My trip dates are 03 and 05 of Apr.
user
Do you need any specifications?
assistant
 I am willing to travel in a single connecting flight.
user
May I know your name?
assistant
I am Charles Lewis.
user
There is no flights available on your dates.
assistant
It's ok, not a problem, thank you.
user
Thank you for choosing us.
assistant