You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Nicole Robinson.

ASSISTANT: How can I help you?

USER: I want to change my reservation due to heavy rainfall at my place. Could you help me?

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, no reservation found by your name.

USER: Ok, thank you for informing me.

ASSISTANT: Thanks.