You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I have booked a ticket to one place but due to change in the schedule of meeting ,I was supposed to move to another place. So, please change my existing reservation.

ASSISTANT: Sure, may I know your name please?

USER: I am Stephanie Carter.

ASSISTANT: Thank you for providing your name,please wait for a while.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, thanks for information.

ASSISTANT: Thank you for contacting us, have a nice day.

USER: Ok.