You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can I know on which dates you want to travel?

USER: May, 28 and May, 30 are my travel dates.

ASSISTANT: Ok, do you require any stopovers in your journey?

USER: Yes, I need a stopover.

ASSISTANT: May I know your name to proceed further?

USER: Nicholas Edwards here.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: I don't have any other preferences.

ASSISTANT: Please wait a minute I will get back to you with the flight details.

USER: Sure.

ASSISTANT: Thank you for your time, sorry to inform we didn't find any flights with your details.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for choosing us, have a nice day.