You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you please change my reservation, due to bad weather conditions?

ASSISTANT: Sure, I am here to help you. Please mention your name.

USER: Thank you. My name is Frank Williams.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for your time, we did not find any reservation on your name.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for opting us.