Hello, I am Eric Rodriguez.
user
Hello Eric, how can I assist you?
assistant
I want to visit National Mall at IAD,  Can you please book a ticket for me?
user
Eric, may I know your journey details?
assistant
Origin point: ATL.
user
May I know your journey dates?
assistant
My depart is on 04/26 and return is on 04/28.
user
No flights found with your details.
assistant
Thank you.
user
Thank you, have a nice day.
assistant