You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please reserve me a flight ticket from DTW to IAD?

ASSISTANT: Your travelling dates please?

USER: My trip dates are Dec 04 and Dec 06.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any specifications?

USER: No.

ASSISTANT: May I know your name please?

USER: I am Michael Hernandez.

ASSISTANT: I am sorry no flights found on your route.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us.