You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: My name is Dorothy Wright. I want to change my existing reservation due to heavy snow.

ASSISTANT: Sure. Please wait for a while, I will let you know.

USER: Ok.

ASSISTANT: thanks for waiting, we have not found any flight reservation on your given name.

USER: No problem, thank you.

ASSISTANT: Thanks for connecting with us.