You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, this is flight booking agency. How may I help you?

USER: I want to change my existing reservation, due to heavy rainfall in New York, so I want to change my destination airport.

ASSISTANT: Sure. Just stay online please, I will search with your details and get back to you.

USER: Ok.

ASSISTANT: Ok, now provide your name please?

USER: My name is Richard Robinson.

ASSISTANT: Thanks for waiting Richard and there is a reservation found. Please give me the new airport codes?

USER: My departure airport is SEA and destination airport is OAK.

ASSISTANT: May I know your travel dates please?

USER: My travel dates are from 07/05 and return on 07/07.

ASSISTANT: Glad to tell you that I have found Delta airlines which flies with one connection.

USER: Please proceed for booking.

ASSISTANT: Sure, the fight ticket is reserved with flight number 1025.

USER: Thanks for your help.

ASSISTANT: Thanks for choosing our airlines. Your are welcome.