You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I would like to enjoy this weekend at Korean war veterans memorial which is in Washington DC - DCA. Can you please help me to book a flight ticket?

ASSISTANT: Sure, let me know your travelling dates?

USER: I will travel from 04/23 to 04/25.

ASSISTANT: Let me know your origin airport code.

USER: My origin airport is Denver, CO - DEN.

ASSISTANT: May I know your name? Delta airlines with single connection and price is 100 of 1012 flight.\.

USER: Sure, my name is Ruth Clark.

ASSISTANT: Shall I proceed?

USER: Please go ahead.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you.