You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

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

ASSISTANT: Sure, can you please let me know your journey dates?

USER: Sure, I would like to go on Oct 11th and return back on Oct 13th.

ASSISTANT: Can you please mention your connection limit?

USER: Ensure it is a single connecting flight.

ASSISTANT: Do you have any airline preference?

USER: Ensure it is in the economy class.

ASSISTANT: May I know your name please?

USER: Myself Catherine Carter.

ASSISTANT: Is there any more specifications in your journey?

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

ASSISTANT: Sorry to inform you that, we did not find any flights matching your credentials.

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

ASSISTANT: Thank you for choosing us.