You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: Please help me in booking a flight ticket in my preferable travel dates Feb, 18 and Feb, 20.

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: DEN and DTW are my airport codes.

ASSISTANT: Is there any connection limit?

USER: I need direct flight.

ASSISTANT: Do you have any other preferences?

USER: No, thanks.

ASSISTANT: May I know your name to proceed further?

USER: Sarah Wright here.

ASSISTANT: We found a direct flight in Delta Airlines with flight number 1008 having an economy class. Shall I proceed to book?

USER: Please proceed.

ASSISTANT: Your booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.