You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: My name is Shirley Moore. I want to change my existing reservation due to heavy rainfall.

ASSISTANT: Sure, I will help you. Please be on hold.

USER: Sure.

ASSISTANT: Thank you for your time. Sorry, we did not find any reservation in your name.

USER: No problem, thank you for your service.

ASSISTANT: Thank you for reaching us.