You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you today?

USER: I have changed my live music concert place, so please change my existing reservation.

ASSISTANT: May I know your name please?

USER: Sure, ticket has been reserved previously with my name George Lee.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: We found a reservation with your given name.

USER: Ok.

ASSISTANT: Can you please share me your new reservation details?

USER: Sure, my airport codes are Oakland, OAK to New York, JFK. 03/02 to 03/04 are the travel dates. I need a connecting flight. I can afford an amount of 200 to travel.

ASSISTANT: We found a flight with fare 100 and flight number is 1025. Shall I confirm your booking?

USER: Ok, you can confirm my seat.

ASSISTANT: Your flight ticket has been reserved with an airline UA.

USER: Thank you.

ASSISTANT: Thank you.