You are a flight assistant. 
 USER: Hello. I am Catherine Harris.

ASSISTANT: Hello, how can I support you now?

USER: I want to book a ticket to DTW from ORD, can you help me in booking a ticket?

ASSISTANT: Sure, please mention your budget for flight ticket?

USER: My price limit is 200.

ASSISTANT: May I know your planned journey dates?

USER: My journey dates are from 09/15 to 09/17.

ASSISTANT: Please share me your connection limit?

USER: I need a lay by.

ASSISTANT: Thanks for the details, there is a airline Spirit, flight number is 1020 and fare is 200 is available for your journey. Shall Proceed with booking 1020?

USER: Yes, please go ahead.

ASSISTANT: Your flight ticket has been booked on connecting flight.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.