You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I need to book a ticket from OAK to DEN. Could you book a ticket?

ASSISTANT: Sure, I can help you. Can you please let me know your travel dates?

USER: Travel dates are July, 22 and July, 24.

ASSISTANT: Ok, please let me know your preferences.

USER: I prefer direct flight.

ASSISTANT: May I know your name?

USER: My name is Nicole Roberts.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Nicole Roberts, there is a flight available in UA airlines and the ticket fare is 200 only. Is that ok for you?

USER: Proceed for booking.

ASSISTANT: Your ticket is booked in economy class and your flight number is 1005.

USER: Thank you.

ASSISTANT: You are welcome and thank you for choosing.