You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Karen Brown. I would like to book a flight ticket from LGA to DCA.

ASSISTANT: Sure, can I know your preferable dates?

USER: I am planning to start on 02/29 and return back on 03/02.

ASSISTANT: I found a flight 1004 of UA airlines matches with your preferences, can I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.