You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Dorothy Roberts. I am planning to spend my summer vacations in Detroit, so please book a flight ticket within a price limit of 200.

ASSISTANT: Sure, may I know your planned travel dates?

USER: I will start on 04/02, return on 04/04.

ASSISTANT: Please share me your source and destination codes.

USER: My source and destination airport codes are IL - ORD, MI - DTW.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We are glad to say that, we found an airline: JetBlue, flight number: 1008 and price is 100.

USER: You can proceed to booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for reaching us.