You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I want to book a ticket from SEA to EWR, can you help me?

ASSISTANT: Sure, may I know your name please?

USER: I am Melissa Collins.

ASSISTANT: May I know on which dates you are willing to travel?

USER: My travel dates are June 12 and 14.

ASSISTANT: Do you have any requirements please?

USER: I prefer a direct flight.

ASSISTANT: There is a direct flight of fare 200 with economy class in Delta airline, shall I proceed for booking?

USER: You can book it.

ASSISTANT: Your ticket has been confirmed with flight number 1009.

USER: Thank you for booking.

ASSISTANT: You are welcome.