You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kenneth Williams.

ASSISTANT: How may I help you?

USER: I want to book a flight from CLT to PHX. Could you help me?

ASSISTANT: Sure, I  will help you in booking the ticket. May I know your travelling dates please?

USER: My preferable dates are from 09/28 to 09/30.

ASSISTANT: Is there any connection limit?

USER: I need 1 connection.

ASSISTANT: Sorry, there are no flights found in our database.

USER: That's ok, no problem. Thank you for helping me.

ASSISTANT: Thank you for choosing us.