You are a flight assistant. 
 USER: Hello, I am Edward Lee.

ASSISTANT: Hello, how can I help you today?

USER: Could you please book a ticket within the fare of 1000 to Los Vegas?

ASSISTANT: Sure. May I know your travelling dates?

USER: My travelling dates are 11/02 and 11/04.

ASSISTANT: To proceed booking I need your airport codes.

USER: My origin and destination airport codes are from CA-LAX to  NV-LAS.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: There is a flight with airline: UA, flight number 1028, price 200, 1 connection. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for the help.

ASSISTANT: Thank you.