You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me in booking the flight ticket from DTW to OAK?

ASSISTANT: Sure, I will help you. Please help me with your name.

USER: Raymond Anderson here.

ASSISTANT: Please help me with your planned travelling dates.

USER: My desired dates are June 05 and June 07.

ASSISTANT: Please help me with your depart and arrival timings.

USER: I prefer to return in afternoon.

ASSISTANT: Do you have any other preferences in your journey?

USER: No.

ASSISTANT: Please allow me a minute.

USER: Sure.

ASSISTANT: Raymond Anderson, I am really sorry to inform you that there are no flights available for your journey.

USER: Ok, no issues. Thanks for checking.

ASSISTANT: Thank you for understanding. Thank you for reaching us. Have a great time.