You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am planning to travel from Den to DTW, help me in booking a flight?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My travelling dates are Jan 18 to 20.

ASSISTANT: May I know your connection preferences?

USER: I need 1 connection flight.

ASSISTANT: Do you have any requirements?

USER: I want to departure in afternoon flight in economy class.

ASSISTANT: Can I have your name?

USER: I am Barbara White.

ASSISTANT: Sorry to say, there is no flight as per your requests.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.