You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

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

ASSISTANT: Sure, let me know your trip dates please?

USER: Sure, my travel dates are from Feb 28 to Mar 01.

ASSISTANT: May I know your connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Do you need any other preference?

USER: I would prefer economy class flight which returns in the morning.

ASSISTANT: Can I know your name please?

USER: Myself Raymond Smith.

ASSISTANT: Sorry to inform you that there are no flight services available on your given details.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thanks for contacting us.