You are a flight assistant. 
 USER: Hello, I am Karen Davis.

ASSISTANT: Hello, how can I help you?

USER: I am planning for a vacation to Oakland, CA-OAK on 12/28, from Philadelphia on 12/26.

ASSISTANT: OK, may I know your source code?

USER: Sure, my source code is PA-PHL.

ASSISTANT: Thanks for providing your details. Please wait a moment.

USER: OK.

ASSISTANT: Thanks for waiting, we found a flight with your information. Airline : Frontier, flight number : 1001 with single connection and price is 100. Shall I proceed booking?

USER: OK, you can proceed with booking.

ASSISTANT: Your booking is confirmed. Thank you, for connecting with us.

USER: Thank you.