You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any help from us?

USER: Could you please book a flight ticket from ORD to DTW?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My travelling dates are Oct 2nd and Oct 4th.

ASSISTANT: Ok, could I have your name please?

USER: My name is Nicole Young.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I need a direct flight.

ASSISTANT: Ok, do you have any other specifications?

USER: I want to return in the afternoon.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: Not an issue, thank you.

ASSISTANT: You are welcome, have a great day.