You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you at this moment?

USER: Can you please book a flight ticket from PHL to PHX?

ASSISTANT: Sure, I am here to help  you. Could you please send me your journey dates?

USER: Thank you. I have planned my travel dates as July 04 and July 06.

ASSISTANT: Ok, please tell me your preferences.

USER: I do not have any specifications so you can proceed with available flight.

ASSISTANT: Ok, may I know your name?

USER: Sure, myself Jeffrey Lee.

ASSISTANT: Sorry to inform you, there is no flight found in this route with the dates you have given.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: You are welcome. Thank you for choosing us. '.

USER: Most welcome.