You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: My name is Debra Evans. I need to book a flight ticket.

ASSISTANT: OK, May I know your departure day and arrival day?

USER: My travelling dates are from Dec 25 to Dec 27.

ASSISTANT: May I know your airport codes?

USER: Sure, I will be departing from Seattle WA - SEA to Philadelphia PA - PHL.

ASSISTANT: OK, Can you please wait for sometime?

USER: OK.

ASSISTANT: I found a flight with your given details, Shall I proceed for booking?

USER: Yes, you can proceed.

ASSISTANT: OK, your ticket is confirmed with flight number: 1027, airline: Spirit, price: 200.

USER: OK. thank you.

ASSISTANT: Thank you.