You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Matthew Evans and I need to book a flight on Dec 27th, so please help me in booking a flight.

ASSISTANT: Sure, may I know your planned airport codes?

USER: My airport codes are ORD - LAS.

ASSISTANT: May I know if you want to return?

USER: I intend to return on 29th of the same month.

ASSISTANT: Ok, please can I know your preference regarding the flight booking?

USER: My depart time is afternoon and I need a connecting flight.

ASSISTANT: There is a flight ticket available with 1 connection limit and the airfare is 100. The flight number is 1000, can I book?

USER: Ok, please proceed.

ASSISTANT: Ok, the flight ticket is confirmed and the airlines is JetBlue. The depart time is 12:00PM and return is 20:00PM.

USER: Thank you.

ASSISTANT: Thank you for choosing our agency, have a safe journey.