You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Please book a ticket from OAK to DCA to attend Board meeting.

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My travelling dates are Nov 28 and Nov 30.

ASSISTANT: Ok, could I have your name please?

USER: Sure, Kimberly Harris here.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I want single connected flight.

ASSISTANT: Ok, may I know your airline preference?

USER: I prefer normal-cost airline.

ASSISTANT: Ok, may I know your class?

USER: I am comfortable with any class.

ASSISTANT: The business class with flight number 1016 of AA airline is available having fare as 700 and connection as 0, is it ok for you?

USER: Ok, please proceed.

ASSISTANT: Ok, your reservation is confirmed.

USER: Ok, Thank you.

ASSISTANT: You are welcome, have a great day.