You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am Anna Harris. My family tour trip was postponed, so I want to change my existing reservation.

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Thank you for your time, there is no reservation found on your name.

USER: Not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your quick response.