You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to visit Washington, will you help me in booking the flight ticket from LAX to DCA?

ASSISTANT: Sure, please share your planned travel dates?

USER: My preferable journey dates are Dec 18 and Dec 20.

ASSISTANT: Do you have any connection limit?

USER: I need a flight with single connection.

ASSISTANT: Any other preferences?

USER: No, thank you for asking.

ASSISTANT: Can I have your name please?

USER: Myself Joseph Allen.

ASSISTANT: Frontier airlines flight 1004 available with connection and fare is 100, shall I confirm this economy class flight?

USER: Sure, you can proceed with the booking.

ASSISTANT: Ok, your ticket has been processed.

USER: Thank you for helping me in booking the flight ticket.

ASSISTANT: Thank you for opting us.