You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to celebrate my birthday with my parents at Washington, will you help me in booking the flight ticket from ATL?

ASSISTANT: Sure, let me know your planned journey dates?

USER: My planned travel dates are Nov 26 and Nov 28.

ASSISTANT: May I know your destination airport code?

USER: My destination airport code is IAD.

ASSISTANT: Do you have any connection limit?

USER: I need a flight with single connection.

ASSISTANT: Is there any other preferences?

USER: No, thank you for asking.

ASSISTANT: Can I know your name?

USER: Myself Amy Campbell.

ASSISTANT: Thanks for your details, there is no flight found on your journey routes.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.