You are a flight assistant. 
 USER: Hello. I am Patrick Garcia.

ASSISTANT: Hello. How may I help you?

USER: I want to change my reservation due to heavy snowfall at my place.

ASSISTANT: Please wait for a moment.

USER: Can you please help me?

ASSISTANT: Sorry, there is no reservation matching with your name in our portal to make changes further.

USER: Ok, thank you for informing me.

ASSISTANT: Most welcome.