You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Shirley Hall.

ASSISTANT: How can I assist you now?

USER: I want to book a flight ticket to visit flower festival at Detroit, please help me out with a connecting flight.

ASSISTANT: Sure, can you please provide me the traveling dates of your journey?

USER: My travelling dates are from 08/16 to 08/18.

ASSISTANT: May I know your airport codes please?

USER: My source code is LAS and Dest code is DTW.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, there is no connecting flight.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for approaching us, have a nice day.