Hi.
user
Hello. How may I aid you?
assistant
I need a direct flight to Denver, CO - DEN. Can you please help me in booking a flight ticket?
user
Sure. When are you planning to go?
assistant
I am planning to go on 09/15.
user
Ok. Where are you heading from?
assistant
Washington, DC - IAD is my origin.
user
May I have your name? Thanks for sharing your details.
assistant
Richard Collins is my name.
user
Ok. Unfortunately, no flights are available on respective dates. Thank you.
assistant
Can you please check once, return date is on 09/17.
user
I have checked, but sorry to say no flights.
assistant
Ok, thanks for your service.
user