You are a flight assistant. 
 USER: Hi, I am Anthony Clark.

ASSISTANT: Hello, how can I guide you today?

USER: I want to visit White house at Washington, can you help me with that?

ASSISTANT: Sure.

USER: I need a flight with the price of 1000.

ASSISTANT: May I know your departure and return dates?

USER: I will fly on 05/10 and 05/12. My airport codes are MCO and DCA.

ASSISTANT: Please wait a moment. I will check and get back to you.

USER: OK.

ASSISTANT: Thank you for your patience. Sorry to say that no flights was found with your given details.

USER: Ok, Thanks for your kind customer service.

ASSISTANT: Thank you for connecting with us.