You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I have planned to book a plane ticket from DTW to SEA, can you assist me in booking?

ASSISTANT: Sure, May I know the travelling dates?

USER: My preferred dates are Mar 31st and Apr 2nd.

ASSISTANT: Do you have any connection limit?

USER: I need single connection between my trip.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: May I know your name?

USER: Samuel Smith.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: No problem, thank you for searching.

ASSISTANT: Thank you for availing us.