You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Helen White.

ASSISTANT: Helen White, how can I aid you today?

USER: I need to attend a interview in LAS. Cab you book me a ticket from OAK?

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

USER: I would start on July 4th and return on 6th.

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

USER: Ok.

ASSISTANT: I found a flight for you with Southwest Airlines and it costs you 100. Shall I proceed to reserve a seat in this single connecting flight?

USER: Fine, please proceed.

ASSISTANT: Your ticket has been booked with 1015 flight number.

USER: Thanks for your service.

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