You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am Brain Perez. I need a direct flight from Washington to attend my brother marriage at MCO, can you please help me to book a flight ticket?

ASSISTANT: Sure, I will help you with that. Can you please share your journey dates?

USER: Sure, my travelling dates are Feb 17 and Feb 19.

ASSISTANT: Can you please share your source code?

USER: My origin airport code is DCA.

ASSISTANT: Please wait for a minute.

USER: Sure, I will wait for your response.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for reaching us.