You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how best I can help you today?

USER: Could you please help me to book a flight ticket from DTW to ATL?

ASSISTANT: Sure, may I know your good name please?

USER: I am Robert Wilson.

ASSISTANT: When do you want to travel?

USER: My trip dates are Nov 16 and Nov 18.

ASSISTANT: Please share your connection limit.

USER: I need a direct flight.

ASSISTANT: Are there any more specifications for you?

USER: I want to return in the morning.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.