You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: I want to attend my school reunion function. Can you book a ticket from OAK to DEN?

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

USER: My planned travel dates are 05/25 and 05/27.

ASSISTANT: Ok, do you have any specifications?

USER: I am comfortable with direct flight only.

ASSISTANT: Ok, hold on for a moment. Let me check the best available flight for you.

USER: Sure.

ASSISTANT: I found a flight for you with Hawaiian Airlines and it costs you 100. Shall I proceed?

USER: If it is a direct flight, please proceed with that booking.

ASSISTANT: On whose name you would like to book this ticket?

USER: Ronald Evans here.

ASSISTANT: Your ticket has been booked with 1019 flight number.

USER: Thank you for the booking.

ASSISTANT: Welcome, thank you for choosing us. Have a safe flight.