You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Myself Donald White.

ASSISTANT: Nice to meet you Donald.

USER: Will you help me in booking the flight ticket from ATL to IAD?

ASSISTANT: Sure, may I know your travelling dates please?

USER: I would like to start my journey on 01/14 and return on 01/16.

ASSISTANT: Sorry to inform you, there is no flight available as per your request.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: My pleasure.