You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please reserve me a flight ticket from DTW to DCA to go for holiday trip?

ASSISTANT: Sure, can you please share your travelling dates?

USER: My planned journey dates are Mar 5 and Mar 7.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a flight having single connection.

ASSISTANT: Let me know your class preference?

USER: I prefer business class for my journey.

ASSISTANT: Any other requirements to be met?

USER: No.

ASSISTANT: May I know your name please?

USER: I am Karen Gonzalez.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.