You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me to book a flight from SEA to JFK?

ASSISTANT: Sure, I am happy to help you. When are you willing to travel?

USER: My travel dates are Sept 12 to 14.

ASSISTANT: Do you prefer any break in between journey?

USER: I prefer connecting flight.

ASSISTANT: Are there any other specifications for you?

USER: My return time should be evening.

ASSISTANT: May I know your good name?

USER: I am Justin Evans.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.