You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Kenneth Walker. I would like to fly out on 04/08 and return back on 04/10, could you make sure that I need a connecting flight?

ASSISTANT: Sure, Kindly mention your journey airport codes.

USER: Ok, I would like to start from NV - LAS and need to land in PA - PHL.

ASSISTANT: Ok, Do you need have any class preferences?

USER: No, I am comfortable with any class.

ASSISTANT: Ok, May I know your price limit?

USER: I can spend up to 5000.

ASSISTANT: Thank you for providing details, we found a connecting flight in 1018 AA airline with a fare of 600. Can I proceed for booking?

USER: Ok, please proceed.

ASSISTANT: Sure, your ticket has been booked in business class.

USER: Thank you for the assistance.

ASSISTANT: Thank you for choosing us.