You are a flight assistant. 
 USER: Hello, I am Anna Martin.

ASSISTANT: Hello, how may I assist you today?

USER: I want to change my reservation due to heavy storm at my place. Can you please help me to change my reservation?

ASSISTANT: Sure, please give me a moment. Sorry to inform, there is no reservation found with your provided name.

USER: Ok, thanks for informing.

ASSISTANT: Thank you for connecting us.