You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to book a flight ticket to DFW from PHX, can you please help me out?

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

USER: Sure, my trip dates are July 02 and July 04.

ASSISTANT: May I know your connection limit?

USER: Sure, I am looking for a flight with 1 connection.

ASSISTANT: Do you have any other specifications?

USER: I prefer business class.

ASSISTANT: May I know your good name?

USER: Sure, my name is David Adams.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.