You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what services are you seeking from us?

USER: Could you please help me to book a flight ticket from SEA to EWR?

ASSISTANT: Sure, can I know your good name please?

USER: I am Eric White.

ASSISTANT:  When you are willing to travel?

USER: My travelling dates are Mar 10 and Mar 12.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a direct flight.

ASSISTANT: Are there any other specifications?

USER: No.

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

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for availing us.