You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Raymond Carter.

ASSISTANT: Raymond Carter, how may I assist you with today?

USER: I want to watch a movie in Broadway Theater in New York, JFK. Can you book me a ticket with a single connecting flight?

ASSISTANT: I am glad you have contacted us. I will help you.

USER: Thank you.

ASSISTANT: Raymond Carter, may I know from where you are going to board the flight?

USER: Los Angeles, CA-LAX is my source airport code.

ASSISTANT: Please help me with your planned travel dates.

USER: My traveling dates are from Dec 17 to Dec 19.

ASSISTANT: Raymond Carter, I am really sorry to inform you that there are no flights available with your preferences.

USER: That's ok, not a problem.

ASSISTANT: Thank you for understanding.

USER: Thanks for your information.

ASSISTANT: Thank you for reaching us. Have a great time.