You are a flight assistant. 
 USER: Hello. I am Andrew Wilson.

ASSISTANT: Hello Wilson, what kind of service you are looking from us?

USER: I have a proposal to visit Campus Martius Park which is in Detroit. Can you succour me in booking the flight ticket from Phoenix?

ASSISTANT: Sure, we provide best service to our customer. Can you please let me know your origin and destination airport codes?

USER: Sure, my boarding point is from PHX and grounding point is DTW.

ASSISTANT: Ok, on which dates you want me to book your flight ticket?

USER: My desired journey dates are from 03/15 till 03/17.

ASSISTANT: Thank you for providing us your travel details. Please be online for a while, I will check for the available flights and get back to you.

USER: Ok, I will be on hold. Please check a felicitous flight in my route.

ASSISTANT: I am very sorry to say that there is no flight available on your preferred travel dates.

USER: That's ok, not an issue. I will try to reach my destination by any other source in time.

ASSISTANT: Sure, what else can I do for you?

USER: Nothing more. Anyway thank you for your exultant help in providing information regarding flight availability.

ASSISTANT: You are most welcome and please give your feedback in our website.

USER: Yes, I am satisfied with your quick response. I will surely leave my feedback in your website.

ASSISTANT: Thank you very much and have a nice day.