You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me to book a flight from CLT to JFK?

ASSISTANT: Sure, let me know your journey dates.

USER: My travel dates are Dec 17th and 19th.

ASSISTANT: Ok, do you have any preference in connection?

USER: I am looking for a direct flight.

ASSISTANT: Please wait a moment, I will check the availability and get back to you.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry to inform you that there is no flight available as per your requirements.

USER: No problem, thank you for your information.

ASSISTANT: Can I have your name please?

USER: My name is Ryan Martin.

ASSISTANT: Thank you for reaching us.