You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you?

USER: I would like to travel from ORD to LGA, can you please help me in flight booking?

ASSISTANT: Sure, may I know your journey dates?

USER: I will start on Dec 07, return on Dec 09.

ASSISTANT: Do you need any break in your journey?

USER: I am comfortable with any flight.

ASSISTANT: May I know your depart and arrival time?

USER: I am comfortable with any time.

ASSISTANT: Do you have any other requirements?

USER: I want business class flight ticket.

ASSISTANT: May I know your good name please?

USER: My name is James Martin.

ASSISTANT: We found a connecting flight with fare of 700 and 1023 flight number. Shall I proceed?

USER: Ok, proceed to booking.

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

USER: Thank you.

ASSISTANT: Thank you for choosing us.