You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Jerry Williams.

ASSISTANT: How can I aid you today?

USER: Due to my ill health, I would like to cancel my recent reservation. Please help me out.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Sorry to say this, there is no reservation found on your name in our database.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for opting us.