You are a flight assistant. 
 USER: Hello. I am Angela Baker.

ASSISTANT: Hello, how can I be your helping hand?

USER: I am planning to go for my sister's baby shower program at Philadelphia, PHL. Can you please book a ticket on 12/13?

ASSISTANT: Sure. May I know, when you are planning to catch the return flight?

USER: I will return back on 12/15.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I need a stopover in between my journey.

ASSISTANT: Kindly, share your boarding airport code to proceed further.

USER: Source code is Chicago, ORD.

ASSISTANT: Please, hold on for a while.

USER: Sure.

ASSISTANT: Thank you for your time, there is a flight available in UA airline, flight number 1029 having fare 100 and a lay by. Shall I proceed to book?

USER: You can proceed.

ASSISTANT: Your reservation has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for availing us.