You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I want to book a ticket from DEN to DTW, can you help me?

ASSISTANT: Sure, I will help you. Can I have your planned travel dates please?

USER: My travel dates are Dec 05 and 07.

ASSISTANT: May I know your name please for booking purpose?

USER: I am Scott White.

ASSISTANT: May I know your connection preference?

USER: I prefer a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I want to return in the evening.

ASSISTANT: Scott White, no flights has been found on your planned travel dates.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for reaching us.