You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Linda Lewis. I would like to book a flight ticket from PHL to PHX, can you please help me?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: Sure, my journey dates are 05/07 and 05/09.

ASSISTANT: Please wait for a minute. Sorry, I could not find any flight with your travel dates.

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

ASSISTANT: My pleasure.