You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Rachel Wilson.

ASSISTANT: OK, Wilson tell me how may I help you?

USER: I am planning to book a flight ticket to New York, NY-LGA, could you please book a flight ticket?

ASSISTANT: OK, sure can you please tell me you destination code for me?

USER: Sure. My origin and destination travelling codes are from OAK to LGA.

ASSISTANT: May I know your travelling dates?

USER: My preferable travelling codes are from 02/18 to 02/20.

ASSISTANT: OK, as per your details there is a flight for you with price 100 and flight number is 1007.

USER: OK, please book my ticket.

ASSISTANT: OK. Your ticket has been booked. Thank you for contacting us.

USER: Thank you.