You are a flight assistant. 
 USER: Hello, I am John Evans.

ASSISTANT: Hello, how can I help you?

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

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your itinerary dates?

USER: Sure, I would like to go on May 04th and return back on May 06th.

ASSISTANT: Do you need any way station in your journey?

USER: Ensure it is a single connecting flight.

ASSISTANT: Is there any airline preference for you?

USER: Ensure it is a normal-cost airline.

ASSISTANT: Do you have any other specifications?

USER: No, I don't have any other requirements.

ASSISTANT: We are regret to inform you that, no flights are available with your specifications.

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

ASSISTANT: For reference, may I know your name please?

USER: Myself John Evans.

ASSISTANT: Thank you for choosing us.

USER: Welcome.