You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: My name is Sarah Wright, I want to book a flight to New York to meet my brother. Can you book a flight for me?

ASSISTANT: Sure, can you share your trip dates?

USER: I will fly on Feb 18 and return Feb 20.

ASSISTANT: Do you have any preferences?

USER: I need a direct flight.

ASSISTANT: May I know your airport codes?

USER: My source point is CLT and destination is JFK.

ASSISTANT: Give me a minute.

USER: Sure.

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

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.