You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am planning to book a flight ticket to CLT from PHX, can you please help me out?

ASSISTANT: Sure, may I know your planned dates?

USER: Sure, my planned travelling dates are Oct 10 and Oct 12.

ASSISTANT: Do you have any class preferences?

USER: I prefer business class.

ASSISTANT: May I know your name for the documentation purpose?

USER: Sure, my name is Linda Campbell.

ASSISTANT: Do you want any another requirements?

USER: I am looking for a flight with 1 connection.

ASSISTANT: Unfortunately, no flights available on your requirements. Welcome, thank you for opting us.

USER: It's ok, thank you for the information.