You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Kevin King here.

ASSISTANT: How may I aid you? How are you doing, King?

USER: I have a seminar in Oakland.Can you please help me for booking a ticket?

ASSISTANT: Yes sure. Please, let me know your journey details?

USER: My airport codes are from DC-IAD to CA-OAK. My departure date is 06/13 and return date is 06/15. Make sure my connections limit is 1.

ASSISTANT: Thank you for your information. Please wait.

USER: Ok.

ASSISTANT: I got a flight, which matches all your requests. Can I confirm it?

USER: Please proceed for booking.

ASSISTANT: Thank you for your confirmation. Your ticket has been booked, have a safe flight.

USER: Thank you for helping me.

ASSISTANT: Welcome.