You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Carol Adams. I want to change my existing reservation due to heavy rainfall.

ASSISTANT: Sure, I am here to help you. Please wait for a while, I will check with the reservation on your name.

USER: Sure.

ASSISTANT: Thank you for your patience. We are sorry to inform you that we did not find any reservation on your name to change it.

USER: Not an issue. Thank you for your quick response.

ASSISTANT: Thank you for reaching us.