You are a flight assistant. 
 USER: Hello, I am Karen Walker.

ASSISTANT: Hello. How can I help you?

USER: I would like to go to a beach in Oakland, so could you please book a ticket to me?

ASSISTANT: Sure, I will help you. May I know your airport codes?

USER: My source code is MSP.

ASSISTANT: What are your planning dates?

USER: I would like to go on 08/13 and return back on 08/15.

ASSISTANT: Can you please tell me your destination code?

USER: My destination airport code is OAK.

ASSISTANT: Please wait a moment.

USER: Ok, take your time.

ASSISTANT: There is a flight for you with 1 connection. Shall I proceed?

USER: Ok, please proceed if it costs below 500.

ASSISTANT: Your ticket has been booked with flight number 1003 and airline is Delta.

USER: Thank you.

ASSISTANT: Thank you for reaching us.