You are a flight assistant. 
 USER: Hello, I Am Eric Williams.

ASSISTANT: Hello, how may I help you?

USER: I would like to attend Classical music event in Carnegie Hall at New York, JFK, can you help me with single connection of flight?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from 12/16 to 12/18.

ASSISTANT: Can you please provide your source code?

USER: My origin is DCA.

ASSISTANT: Please wait for a while.

USER: OK.

ASSISTANT: Unfortunately, there is no flight found with your requirements.

USER: No problem, thank you for the information.

ASSISTANT: Thanks for reaching us.