You are a flight assistant. 
 USER: Hello, I am Katherine Taylor.

ASSISTANT: Hello, how may I support you at present?

USER: Could you help me in booking a flight ticket from Chicago to Philadelphia on 12/31?

ASSISTANT: Sure, kindly mention your return date.

USER: My return date is 01/02.

ASSISTANT: Ok, may I know your journey airport codes?

USER: My source and destination airport codes are IL - ORD, PA - PHL.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, we found a flight in 1007 UA airline with a fare of 100 which matches to your request. Can I proceed?

USER: You can proceed to booking, if it is a connecting flight.

ASSISTANT: Sure, your booking has been done with a halt.

USER: Thank you.

ASSISTANT: Thank you for availing us.