You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to change my existing reservation due to bad weather condition, can you please help me with that?

ASSISTANT: Sure, please wait for a while.

USER: Ok, my name is Michael Smith.

ASSISTANT: Smith, there is no active reservation found with your name in our records.

USER: Not an issue, thank you.

ASSISTANT: Most welcome.