You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am John Green.

ASSISTANT: How can I help you?

USER: I would like to visit Stratosphere in Las Vegas to play Casino, can you please book a flight ticket?

ASSISTANT: Sure, can you please provide your source and destination airport codes?

USER: Sure, I would like to travel from OAK to LAS.

ASSISTANT: May I know your travel dates for booking flight ticket?

USER: My travel dates are 06/28 and 06/30.

ASSISTANT: There is a flight ticket available as per your requirements.

USER: That's fine.

ASSISTANT: Shall I proceed?

USER: Sure, please proceed to book if it has connection 1.

ASSISTANT: Yes, airline is Southwest and flight number is 1024. Your flight ticket is booked.

USER: Thank you for booking.

ASSISTANT: Thank you for contacting us.

USER: Most welcome.