You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: Can you aid me in booking a flight ticket from JFK to PHX?

ASSISTANT: Sure, may I know you travelling dates?

USER: Sure, I would like to go on Sept 20th and return back on Sept 22nd.

ASSISTANT: May I know your good name to book the flight ticket?

USER: Myself Christine Perez.

ASSISTANT: Is there any class preference?

USER: Any class is fine for me.

ASSISTANT: Ok, may I know your connection limit?

USER: Ensure it is a single connecting flight.

ASSISTANT: Sure, Is there any airline preference?

USER: No, I don't have any airline preference. But, make sure the flight depart time is in the evening.

ASSISTANT: Please wait.

USER: Sure, take your time.

ASSISTANT: Perez we didn't find any flights with your required dates to travel.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for opting us.

USER: Welcome.