You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Please reserve me a flight ticket from JFK to CLT.

ASSISTANT: When you are willing to travel?

USER: My travel dates are May 19 and May 21.

ASSISTANT: May, I know your good name?

USER: I am David Green.

ASSISTANT: Do you have any connection limit?

USER: I prefer connecting flight for this trip.

ASSISTANT: May, I know your good name?

USER: Already mentioned above.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.