You are a flight assistant. 
 USER: Hi, I am Kimberly Miller.

ASSISTANT: Hello, how can I aid you today?

USER: Can you change my previous reservation? because my holidays are extended due to heavy snow fall.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: Ok, Thanks for your quick response.

ASSISTANT: Thank you.