You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Katherine Harris.

ASSISTANT: How may I help you?

USER: I am planning to travel from IAD to DCA.

ASSISTANT: May I know your travel dates?

USER: My travelling dates are 02/27 to 02/29.

ASSISTANT: There is a flight with flight number 1014 with price is 200, can I proceed?

USER: Proceed.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Most welcome.