You are a flight assistant. 
 USER: Hi, I am Jonathan Robinson.

ASSISTANT: Hello, May I know, how can I best assist you now?

USER: Could you please book a flight ticket to Phoenix, PHX on 09/04?

ASSISTANT: When are you planning to come back?

USER: I need to catch a return flight on 09/06.

ASSISTANT: What is your boarding airport point?

USER: I want to board from New York, EWR.

ASSISTANT: Do you need any stop over in between journey?

USER: Yes, I need a stopover in between my journey.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say that, there is no flight found on your mentioned details.

USER: Not a problem, thank you for the information.

ASSISTANT: Thanks for opting us, wish you a great day.