You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I serve you?

USER: Can you help me with booking ticket from JFK to CLT?

ASSISTANT: Sure, May I know the travelling dates?

USER: Ok, my travelling dates are from Sept 27 to 29.

ASSISTANT: Do you have any connection limit?

USER: No, I would like to return in the afternoon time.

ASSISTANT: May I know your name?

USER: Sure, I am Brian Davis.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for opting us.