You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I want to cancel my reservation due to heavy floods at my destination place, so please help me in this.

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

USER: Sure, I am Nicholas White.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

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

USER: Not a problem, thank you.

ASSISTANT: Thank you for choosing us.