You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Myself Robert Walker. Can you please help me in flight ticket booking process from PHX to LAX?

ASSISTANT: If you provide your planned departure and return dates of travelling then it is easy to find a exact flight for you.

USER: Thank you, my departure date is 04/06 and return date is 04/08.

ASSISTANT: Sorry, there is no flight found on your route to book your ticket.

USER: Oh! It's ok no problem.

ASSISTANT: Thanks for choosing us, have a good day.

USER: Thank you for your information.