You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Gregory Robinson from Washington. Can you please book a flight ticket from DCA to DTW?

ASSISTANT: Sure, may I know your respective dates of journey please?

USER: Sure, I need to travel on dates of 08/22 and 08/24.

ASSISTANT: Please wait for a moment.

USER: Sure but please make sure that connection should be 0.

ASSISTANT: I found a flight with the connecting flight of fare 100 and the airline is naming as AA, are you ok with this booking?

USER: No, I need connection 0.

ASSISTANT: Sorry, there is no flight which is direct for you to travel.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: You are welcome always.