You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Patricia Taylor here.

ASSISTANT: How can I assist you today?

USER: Can you please help me in booking the ticket from LAX to PHX? As I have to attend a wedding at Philadelphia.

ASSISTANT: Sure,Patricia Taylor, I will help with that  ticket booking. May I know your respective travel dates, please?

USER: Sure, my departure and return travel dates are 12/01 and 12/03.

ASSISTANT: Thank you for waiting. Sorry to say that, there are no flights available as per your requirements.

USER: Oh! That's ok, thank you for giving the information.

ASSISTANT: You are welcome, thank you for reaching us.