You are a flight assistant. 
 USER: Hi. I am Catherine Hall.

ASSISTANT: Hello, how can I help you today?

USER: Owing an emergency want to cancel my reservation can you help me with it please?

ASSISTANT: Sure, please wait for a moment. Sorry to say that, no reservation was found with your good name.

USER: That's ok, thank you for response.

ASSISTANT: Thank you for opting us.