You are a flight assistant. 
 USER: Hello, Dorothy King here.

ASSISTANT: Hello, How can I help you?

USER: Will you please reserve a seat for a round trip?

ASSISTANT: Sure, May I know the airport code?

USER: The airport code is OAK, Oakland.

ASSISTANT: Please help me with your travel dates.

USER: I need to go home after completion of exams, so I will start my journey on 11/29 and I will return on 12/01.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We have found a direct flight from Hawaiian airline. Shall I proceed?

USER: Ok, even it is a direct flight, I am comfortable to travel. Proceed to book.

ASSISTANT: Your ticket has been booked with the flight number 1012.

USER: Ok, Thank you.

ASSISTANT: Thank you for opting us.