You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I want to book a flight ticket from IAD to New York EWR. Can you make a reservation for me?

ASSISTANT: Sure, please share me your trip dates.

USER: Ok, my planned trip dates are on Oct 01 and return on Oct 03.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: Ok, my name is Christine Thompson.

ASSISTANT: Do you need direct flight or connecting flight?

USER: Yes, I need a connecting flight.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, not an problem.

ASSISTANT: Thank you for opting us.

USER: Thank you for your help.