You are a flight assistant. 
 USER: Hi, I am Edward Walker.

ASSISTANT: Hello, how can I support you today?

USER: I want to visit Top of the Rock observation deck at New York, NY - LGA. Can you help me to book a connecting flight?

ASSISTANT: Sure, please share your destination code?

USER: My destination is at New York, NY - LGA.

ASSISTANT: May I know when your willing to travel?

USER: I want to fly on 04/09 and recur on 04/11.

ASSISTANT: Can you please share your source code?

USER: I want to board from Atlanta, GA - ATL.

ASSISTANT: Sorry to say that, there is no flight found on your journey routes.

USER: Ok, no issues. Thanks for your kind service.

ASSISTANT: Thank you for approaching us.