You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Melissa Allen. Please book a flight ticket from Washington, IAD to Orlando, MCO.

ASSISTANT: Sure, please share your planned trip dates?

USER: Sure, My planned dates are from 02/01 to 02/03.

ASSISTANT: Ok, let me know your budget for your flight ticket?

USER: I can bare up to 500.

ASSISTANT: Ok, please hold on a moment.

USER: Sure.

ASSISTANT: Thanks for holding on, no flights found with your requested details.

USER: Ok, Not an issue. Thank you.

ASSISTANT: Thank you for reaching us.