You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: I am planning to visit Phoenix, will you help me in booking the flight ticket from LAX to PHX?

ASSISTANT: Sure, may I know your journey dates?

USER: My preferable journey dates are Dec 17 and Dec 19.

ASSISTANT: Do you need any break in your journey?

USER: I need a flight with single connection.

ASSISTANT: Is there any class preference?

USER: No, I didn't have any other specifications.

ASSISTANT: May I know your name please?

USER: Myself Daniel Wright.

ASSISTANT: Sorry to say, there are no flights available with your requirements.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for choosing us.