You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Please assist me in finding a business class flight from OAK?

ASSISTANT: Sure, please share your journey dates?

USER: My journey dates will be Mar 20th to Mar 22.

ASSISTANT: May I know your destination airport code?

USER: My destination airport code is IAD.

ASSISTANT: Do you have any other specifications to be met?

USER: I need a connecting flight.

ASSISTANT: May I know your good name please?

USER: The reservation should be done with the name Donna Martin.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your valuable time, unfortunately no flights available on that route.

USER: Its ok, thank you.

ASSISTANT: Thank you for choosing us.