You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Justin White here. I want to book a flight reservation on the route from JFK to CLT, can you please help me?

ASSISTANT: Sure, help me with your trip dates.

USER: My travelling dates for this journey will be from 08/12 to 08/14.

ASSISTANT: Sorry, there is no flight on your requested dates.

USER: Oh! That's fine, thank you for checking anyways.

ASSISTANT: Thank you for reaching us.

USER: You are most welcome.