You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: I want to book a ticket from Seattle to New York.

ASSISTANT: Sure, I am here to help you with that. Can I know your itinerary dates?

USER: Departure is by Dec, 26 and return date is Dec, 28.

ASSISTANT: May I know your airport codes?

USER: Sure. My airport codes are SEA and JFK.

ASSISTANT: Can I know your good name?

USER: I am Carolyn King.

ASSISTANT: Ok, wait for a minute.

USER: Ok.

ASSISTANT: There is a flight ticket which is a economy class in the Southwest  Airlines, the ticket cost is 100 and the connection limit is one. Shall I reserve the ticket?

USER: Please book a flight.

ASSISTANT: Your flight ticket is confirmed in an economy class and the flight number 1021.

USER: Thank you.

ASSISTANT: Thank you for approaching us. Have a safe journey.