You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Karen Campbell. Please help me in booking a flight ticket in my preferable travel dates Jan, 16 and Jan, 18.

ASSISTANT: Sure, may I know your source and destination codes?

USER: My airport codes are ORD and DCA.

ASSISTANT: Do you need a halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found an airline: JetBlue, flight number: 1024 and price is 200 with one connection.

USER: I am happy with that airlines, please proceed for further.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.