You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Please book me a flight ticket from IAD to OAK to meet my family.

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: I have planned to travel on May 16th and return on May 18th.

ASSISTANT: Can you please share your connection limit?

USER: I prefer connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No, thanks.

ASSISTANT: May I know your name please?

USER: Raymond Robinson.

ASSISTANT: American airlines is providing connecting flight for you with the fare of 800 in business class, shall I proceed with the booking?

USER: Ok, please book this ticket.

ASSISTANT: Your ticket is booked with the flight-1023.

USER: Thank you.

ASSISTANT: Thank you for choosing us.