You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to attend for an interview in New York, so please book a flight ticket from PHL to EWR.

ASSISTANT: Sure, may I know your itinerary dates?

USER: I want to fly on Dec 10, return on Dec 12.

ASSISTANT: Do you prefer a direct or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: May I know your name?

USER: My name is Nicole Johnson.

ASSISTANT: Sorry Nicole Johnson, no flights are available on your route.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.