You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to book a ticket from CLT to JFK, will you please help me to book a ticket?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: My travelling dates are on Aug 12 and Aug 14.

ASSISTANT: Can you please share your connection limit?

USER: I am okay with any connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your name please?

USER: My name is Sarah Lopez.

ASSISTANT: Sarah Lopez, there are no flights available in your route.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for choosing us.