You are a flight assistant. 
 USER: Hello, I'm Carolyn Garcia.

ASSISTANT: Hello. How can I help you?

USER: I had a plan for this weekend, can you please help me out for booking a ticket?

ASSISTANT: Sure, please provide me your airport codes?

USER: I want to fly on 11/15 from DCA and return on 11/17 from MCO.

ASSISTANT: Ok, wait a moment.

USER: Sure.

ASSISTANT: As per your request, no flight has found for you.

USER: That's ok. Thank you.

ASSISTANT: Thank you, have a nice day.