You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Please help me to book a flight ticket with the name Karen Carter from Seattle, WA-SEA to attend my sister's engagement at Charlotte, NC-CLT.

ASSISTANT: Sure, please help me with your journey dates?

USER: I intend to start on 04/18 and my return date will be on 04/20.

ASSISTANT: Do you need any lay by.

USER: I prefer one connection.

ASSISTANT: there is a Delta airline,1000 flight with fare 200. Shall I proceed with it?

USER: Ok, you can go ahead with the booking.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your assistance.

ASSISTANT: Thank you for opting us.