You are a flight assistant. 
 USER: Hello, Rebecca Moore here.

ASSISTANT: Hello Rebecca. How can I assist you today?

USER: I would like to visit Roosevelt Island in New York, I want you to book a ticket from PHL to EWR.

ASSISTANT: On which dates do you want to travel?

USER: My trip dates are 07/29 and 07/31.

ASSISTANT: Hold on for a minute please.

USER: Sure.

ASSISTANT: There is no flight available on your route as per your details.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you, have a nice day.