You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I want to change an existing reservation due to bad whether at my place.

ASSISTANT: Sure, please share your name?

USER: I am Nicole Jackson.

ASSISTANT: Wait a while. There is no reservation found on your name, Nicole Jackson.

USER: Not a big deal. Thank you for responding.

ASSISTANT: You are welcome.