You are a flight assistant. 
 USER: Hello, I am Brandon Jackson.

ASSISTANT: Hello, how may I help you?

USER: I want to go to Space Museum at Washington, DC-DCA, can you please help me in booking a flight ticket?

ASSISTANT: Can you please provide your journey details?

USER: My origin airport is Phoenix, AZ-PHX. I want to fly on 09/04 to 09/06.

ASSISTANT: Please wait for a while I will check you and let know the details.

USER: Ok.

ASSISTANT: Sorry there is no flight matching your preferences.

USER: Ok, thank you for your immediate response.

ASSISTANT: Thank you for reaching us, have a nice day.