You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I have planned to book a ticket from OAK to LAS, can you assist me?

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

USER: My preferred dates are Jan 29th and Jan 31st.

ASSISTANT: Can you please share your connection limit?

USER: I need to travel in a direct flight.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: May I know your name please?

USER: Frank Clark.

ASSISTANT: United airlines is providing direct flight for you with the fare of 200 in economy class, shall I proceed with the booking?

USER: Proceed.

ASSISTANT: Your ticket is booked with the flight-1000.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.