You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Myself Daniel Rodriguez. I want to book a ticket from DC-IAD to NC-CLT.

ASSISTANT: Sure, can I know the dates of travel?

USER: My trip dates are from 12/13 to 12/15.

ASSISTANT: Hold on for a moment.

USER: Ok.

ASSISTANT: I'm sorry Daniel, there are no flights matching your preferences.

USER: Ok, thank you for your information.

ASSISTANT: Thank you, have a good day.