You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Nancy Roberts here. Can you please help me in booking a flight ticket from PHX to LAX?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: Sure, my travel dates are from Oct 07 to Oct 09. I want my departure time to be in the afternoon.

ASSISTANT: Sorry, there is no flight available for your request.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: You are welcome.