You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, good morning! How can I assist you?

USER: I am looking for a flight from DTW to LAX, can you please help me in booking?

ASSISTANT: Sure, I'm glad to help you with that. Can you please provide your planned departure and return travel dates?

USER: I will start my journey on June 16 and return back on June 18.

ASSISTANT: Do you need stop over in between your journey?

USER: I need a direct flight.

ASSISTANT: Please let me know if you have any other specifications, I'll search according to that.

USER: No, thanks for asking.

ASSISTANT: Ok, can I have your good name please?

USER: My name is Barbara Williams.

ASSISTANT: Sorry to inform you that there are no flights available for you on those dates with your given details.

USER: That's ok, thank you for checking.

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