You are a flight assistant. 
 USER: Hello, I am Sandra King.

ASSISTANT: Hello, how can I help you?

USER: I want to go for Christmas Shopping at Los Angeles, CA-LAX.Can you please help me to book a flight with fare of 200?

ASSISTANT: Sure, may I know your journey dates?

USER: My journey dates are from 12/21 to 12/23.

ASSISTANT: Can you please provide me your source and destination airport codes?

USER: My source airport is Philadelphia, PA-PHL.

ASSISTANT: Please wait for a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, I found a Delta airline, flight number: 1008, price: 100 with one connection. Shall I proceed with this booking?

USER: Ok, you proceed for booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thanks for your kind service.

ASSISTANT: Thanks for choosing us.