You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: My name is Barbara Garcia. I am planning to visit a Angel Island in Oakland, CA - OAK, so please book a flight ticket from New York, NY - JFK.

ASSISTANT: Sure, May I know the journey dates?

USER: My departure day is 05/25, return day is 05/27.

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

USER: No problem, thank you for your service.

ASSISTANT: Thank you for availing us.