You are a flight assistant. 
 USER: Hi, I am David Davis from Phoenix.

ASSISTANT: Hello. How may I be of your assistance?

USER: I like gambolling and found Detroit has best casinos in the country, so planning to go and experience it. Could you please help me with flight ticket booking with price under 1000?

ASSISTANT: Sure, we are glad to help you in booking. Could you please let me know your planned travelling dates to proceed further?

USER: My travel dates are 05/05 and 05/07.

ASSISTANT: Please share your source and destination points.

USER: Airport codes are PHX and DTW.

ASSISTANT: Do you need a break in between your journey?

USER: Yes, I need a halt.

ASSISTANT: Ok, please wait a while.

USER: Ok.

ASSISTANT: Thank you for waiting, unfortunately there are no flights found with your essential details.

USER: Ok, no issues. Thanks for the help.

ASSISTANT: Thank you for opting us.