You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Gary Phillips. I would like to attend a meeting with my client in Fisher Building at Detroit, DTW. Can you please help me with book a flight ticket on 06/06?

ASSISTANT: Sure, can I know your travelling dates?

USER: My return date is on 06/08.

ASSISTANT: May I know, from where are you going to board?

USER: My source airport code is from Las Vegas, NV - LAS.

ASSISTANT: Do you need connecting flight?

USER: Yes, I need connection of flight.

ASSISTANT: Sorry, there are no flights on your travelling dates.

USER: OK, not an issue. Thanks for the information.

ASSISTANT: Thank you for availing us.