You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Nicole Martin here. I want to change my existing reservation due to the climate, hope your helping me out.

ASSISTANT: Sure, give me a minute.

USER: Ok.

ASSISTANT: Sorry Martin, I couldn't find any reservation on our name.

USER: It's ok, no issues. Thank you for your information.

ASSISTANT: You are welcome.