You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I'm planning to visit Oakland hills, can you book a ticket from HOU to OAK?

ASSISTANT: May I know your desired travel dates please?

USER: Sure, my planned departure and return travel dates are 12th and 14th of March.

ASSISTANT: Can I know your name please?

USER: Yes, my name is Robert Campbell.

ASSISTANT: Do you have any specifications?

USER: Yes, I prefer business class in normal-cost airlines.

ASSISTANT: There is a flight with connection limit 1 and fare 200, shall I proceed for booking?

USER: Is it in business class?

ASSISTANT: Your ticket is booked, flight number 1003 with Hawaiian Airlines. It is business class.

USER: Fine, thank you for booking the ticket.

ASSISTANT: Thank you for opting us.