You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Myself David Hill, can you help me to book a flight from CA - OAK to CA - OAK on a round trip?

ASSISTANT: Sure, I am glad to help you in booking the flight ticket. May I know your planned travel dates?

USER: Ok, please book the flight ticket on the date 06/01 and return date 06/03.

ASSISTANT: Here is a connecting flight is available and airfare is about 200. Can I proceed in booking?

USER: Ok, please take your own time. Please book it.

ASSISTANT: Your ticket has been reserved for the flight 1007 in UA airlines.

USER: Thank you for assisting me with the booking.