You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Stephanie Nelson. I am planning to watch sports live events in Boston, so please book a flight ticket from New York.

ASSISTANT: Sure, can I know your travelling dates?

USER: My departure day is 11/10, return day is 11/12.

ASSISTANT: Ok, let me know your source and destination airport codes?

USER: My source and destination airport codes are NY - LGA, MA - BOS.

ASSISTANT: Sorry, there are no flights found on given schedule.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you.