You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to book a connecting flight from OAK to IAD. Can you please help me with the booking?

ASSISTANT: Sure, I can help you and can I know your name for further proceeding?

USER: Sure, I am Virginia Scott.

ASSISTANT: On what dates that you have planed your journey?

USER: I want to depart on Jan 26 and intend to return on Jan 28.

ASSISTANT: Do you have any connection preference in your journey?

USER: I am looking for a flight with single connection.

ASSISTANT: Is there any airline preference?

USER: No.

ASSISTANT: I have found a direct flight in Hawaiian airlines with a fare of 200, is it ok for you to book the ticket?

USER: If it is a business class then proceed for booking.

ASSISTANT: Sorry, the above flight is not a business class.

USER: I need a business class please check with it.

ASSISTANT: I have checked with business class but there are no flights on your travel dates.

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

ASSISTANT: You are most welcome and thank you for reaching us.