You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Owning an emergency meeting PHX, can you book me a flight ticket from PHL?

ASSISTANT: May I know your journey dates please?

USER: My trip dates are from 02/23 till 02/25.

ASSISTANT: Ok, may I know your name.

USER: Myself Rebecca Wright.

ASSISTANT: Sorry Rebecca, there is no flight available at those location.

USER: That's ok, no problem. Thank you for your help.

ASSISTANT: Thank you for choosing our agency.