You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in booking a flight ticket from CLT to DCA?

ASSISTANT: Sure, please share your planned travel dates?

USER: I want to fly on Dec 25 and return on Dec 27.

ASSISTANT: Do you have any connection limit?

USER: I need a single connection.

ASSISTANT: Any other preferences?

USER: No.

ASSISTANT: Can I have your name please?

USER: Myself Robert Anderson.

ASSISTANT: United airlines flight 1028 available with connection and fare is 100, shall I confirm this economy class flight?

USER: You can proceed to booking.

ASSISTANT: Ok, your ticket has been processed.

USER: Thank you.

ASSISTANT: Thank you for opting us.