You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me to book a flight from DFW to PHX?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: Sure, I want to travel on Oct 16 and need to return on Oct 18.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I need a connecting flight.

ASSISTANT: May I know your good name please?

USER: I am Kevin Smith.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: Thank you for approaching us.