You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Myself Jessica Turner, I want to travel from JFK to IAD. Will you please book a flight ticket?

ASSISTANT: Yes, sure. Please let me know your travelling dates?

USER: Sure, my travelling dates are 06/12 and 06/14.

ASSISTANT: Jessica, there is no flight on your preferred dates. Thank you for reaching us.

USER: Oh! I see, never mind. I'll just do it after the holiday's. Thanks for your information.

ASSISTANT: Ok, good.