You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I want to attend a Marriage in Chicago. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, we are here to help you.

USER: Thanks.

ASSISTANT: May I know your trip dates?

USER: My travelling dates are Oct 02 and Oct 04.

ASSISTANT: Where you need to catch the flight and land?

USER: My airport codes are LAS and ORD.

ASSISTANT: Do you need any way station in your journey?

USER: I prefer single connecting flight.

ASSISTANT: May I know your depart and arrival time?

USER: No, I don't have any other preferences.

ASSISTANT: May I know your good name please?

USER: My name is Paul Mitchell.

ASSISTANT: There is a connecting flight with fare of 200 and 1019 flight number. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your seat has been reserved with American Airlines in economy class.

USER: Thanks for helping me.

ASSISTANT: Thank you for choosing us.