You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

USER: I want to book a ticket on 05/07 to 05/09. My name is Sandra Moore.

ASSISTANT: Ok, may I know your journey points to proceed?

USER: Sure, I am planning to surprise my brother to celebrate his birthday in Detroit, MI - DTW, and my origin from AZ - PHX.

ASSISTANT: Ok, do you have any other requirements?

USER: My price limit is 200 with a direct flight.

ASSISTANT: Thank you for providing your essentials. Let me check what flights are available for you.

USER: Sure.

ASSISTANT: Thanks for your time. Unfortunately there is no flight available for you at this moment according to your request.

USER: Ok, not an issue. Thank you for your service.

ASSISTANT: Thank you for opting us.