You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I want to go to my grandmother memorial service at Oakland, CA - OAK. Can you please help me in booking from DTW?

ASSISTANT: Sure, may I know your good name?

USER: Stephanie Jackson here.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My planned travel dates are Dec, 15 and Dec, 16.

ASSISTANT: Do you prefer a connecting flight or direct flight?

USER: I need connecting flight.

ASSISTANT: Could you please reverify your travel dates?

USER: Sorry, my return date is Dec, 17.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no flights are available on your route as per your given requirements.

USER: That's ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for choosing us.