You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Timothy Turner, I need a flight with one connection to attend a party with my cousin.

ASSISTANT: Sure, I will help you. May I know your journey dates?

USER: I will take flight on 03/27 and return on 03/29. Please find a flight under price of 1000.

ASSISTANT: Please, share the airport codes of your journey plan.

USER: I will fly from CA-SFO to DC-IAD.

ASSISTANT: Unfortunately, there is no flight found on your specified dates.

USER: ok, thanks for the information.

ASSISTANT: Sorry, for the inconvenience. Thanks for opting us.