You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I need to travel SFO and CLT, can you please reserve flight ticket?

ASSISTANT: Sure, can you share your trip dates?

USER: My travelling dates are Mar,16 and Mar,18.

ASSISTANT: Do you have any preferences?

USER: I am planning to travel with business class amenities.

ASSISTANT: May I know your name?

USER: Make sure it is direct flight and myself Kevin Carter.

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

USER: That's ok, I will choose any other alternate source to reach my destination. Thank you.

ASSISTANT: Thank you for reaching us.