You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I want to book a ticket to visit Detroit, MI - DTW for site seeing. Can you please book a ticket on 06/23?

ASSISTANT: Sure, please share your source point.

USER: My source point is Charlotte, NC - CLT.

ASSISTANT: Ok, may I know your budget?

USER: I can spend up to 200.

ASSISTANT: Ok, kindly mention your name for booking.

USER: Sure, I am Dorothy King.

ASSISTANT: Can you please share your return date?

USER: I want to return on 06/25.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Unfortunately, there were no flights found on your requested dates.

USER: Ok, no issues. Thank you for your service.

ASSISTANT: Thank you for contacting us.