Hello, I am Mark White.
user
Hello, how can I aid you today?
assistant
Can you please help me in booking a direct flight to Washington, DC - IAD for holiday vacation?
user
Sure I will help you, may I know your travelling dates?
assistant
Sure, my travelling dates are 04/24 and return on 04/26.
user
May I know your source code?
assistant
Source airport code is DFW.
user
Sorry, no flights found on your requested dates.
assistant
Ok, no issues.
user
Thank you for approaching us.
assistant
Thanks for your information.
user