You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I have to attend a cultural event at New York, can you help me to book a flight ticket from EWR to JFK?

ASSISTANT: May I know your trip dates?

USER: My travelling dates are 21 and 23 of Sep.

ASSISTANT: Do you prefer any specifications?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry to say, there are no flights found on your route.

USER: It's ok, not a problem, thank you.

ASSISTANT: May I know your name?

USER: I am James Hill.

ASSISTANT: Thank you.