You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I am planning to visit my cousin's home to attend a birthday party at Atlanta, GA - ATL. Can you please help me out to book a ticket?

ASSISTANT: Sure, May I know the source code?

USER: Sure, I am heading from New York, NY - EWR.

ASSISTANT: Please help me with your travel dates.

USER: My travelling dates are 01/04 to 01/06.

ASSISTANT: May I know your name?

USER: My name is Timothy Walker.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: No problem, thanks for your assistance.

ASSISTANT: Thank you for choosing us.