You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be at your service today?

USER: Can you help me in booking a flight ticket form PHX to ORD?

ASSISTANT: Sure, when you are planning to make your journey?

USER: I am planning to go on 12/24, and return on 12/26.

ASSISTANT: In which class you prefer to travel?

USER: I am comfortable with any class.

ASSISTANT: Do you prefer connecting or direct flight in your journey?

USER: I need a direct flight in my journey.

ASSISTANT: May I know your name please for further process?

USER: I am Benjamin Hall.

ASSISTANT: Do you have any other requirements do you prefer in your journey?

USER: No.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Sorry to inform you that, we did not find any flights on your preferred routes matching your preferences.

USER: Ok, no problem. Thanks for the information.

ASSISTANT: Thank you for choosing us.