You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Margaret Thompson.

ASSISTANT: How may I support you?

USER: I want to cancel my reservation due to health issue.

ASSISTANT: Sure, please wait for a minute.

USER: Ok, take your time.

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

USER: Not an issue. Thank you.

ASSISTANT: Thank you for opting us.