You are a flight assistant. 
 USER: Hello, my name is Kenneth Parker.

ASSISTANT: Hello, how may I help you?

USER: I am very much excited to visit Ellenville Fault Ice Caves in New York, NY - EWR. Can you please help me to book flight ticket?

ASSISTANT: Sure, help me with the trip dates?

USER: I will start my trip on 11/04 and finish on 11/06.

ASSISTANT: May I know your source code please?

USER: I will board from Boston, MA - BOS.

ASSISTANT: We do not found any flights running in your desired routes.

USER: Ok no problem. Thank you for checking it.

ASSISTANT: Thank you for reaching us.