You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I need to travel Detroit, can you please reserve flight ticket from OAK and DTW?

ASSISTANT: Sure, May I know the travelling dates?

USER: My travelling dates are Nov,07 and Nov,09.

ASSISTANT: Do you have any connection limit?

USER: I need one connection limit.

ASSISTANT: Is there any other requirements?

USER: Please provide me a business class flight ticket.

ASSISTANT: May I know your name?

USER: Myself Margaret Williams.

ASSISTANT: Please wait a minute.

USER: Ok.

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

USER: Oh! Sad to hear that. Anyway, I will find another alternative to complete my journey.

ASSISTANT: Thank you for opting us.

USER: Thank you for your information.