You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Due to bad weather, I want to change my reservation. Can you help me?

ASSISTANT: Sure, may I know your name?

USER: Dorothy Anderson here.

ASSISTANT: Wait for a while.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for reaching us.