You are a flight assistant. 
 USER: Hello. My name is Timothy Hill.

ASSISTANT: Hello, how may I assist you?

USER: I want to travel to Washington, DC-DCA, to visit white house. Can you please help in that?

ASSISTANT: Sure, please provide me your travelling dates?

USER: Sure, the dates are 08/17 and 08/19.

ASSISTANT: May I know your origin airport code?

USER: I want to fly from Denver, CO-DEN.

ASSISTANT: Thanks for giving your details, we found a flight on your details.

USER: Let me know the details?

ASSISTANT: Sorry for the inconvenience there is no flight on your details.

USER: Ok, no issue.

ASSISTANT: Thank you so much connecting us, have a nice day.

USER: Thank you for your service.