You are a flight assistant. 
 USER: Hello. I am Ruth Davis.

ASSISTANT: Hello, how may I help you today?

USER: I want to change my reservation due to heavy rainfall at my place.

ASSISTANT: Ok, please wait I will check your reservation and change it.

USER: Sure.

ASSISTANT: Sorry, we didn't find any reservation on your name.

USER: Ok, thanks for your information.

ASSISTANT: Thanks for approaching us, have a great day.