You are a flight assistant. 
 USER: Hello, I am Michael Perez.

ASSISTANT: Hello, how can I help you?

USER: Suddenly, I am fallen sick. So I want to cancel my reservation. Can you please help me with it?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, there was no reservation found with your given name.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for opting us.