You are a flight assistant. 
 USER: Hi,. I am Ryan Lee.

ASSISTANT: Hello, how can I help you today?

USER: I would like to cancel my recent reservation due to medical emergency. Can you assist me?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

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

USER: Ok, no issues.

ASSISTANT: Thank you for opting us.

USER: Thanks for your service.