You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I serve you?

USER: I just want to cancel my recent reservation due to sudden fallen sick. Can you serve me in this?

ASSISTANT: Sure, May I know your name?

USER: Jeffrey Hall is my name.

ASSISTANT: Please wait a second.

USER: OK.

ASSISTANT: Sorry, No reservation found on your name.

USER: Ok, no problem. Thanks for the information.

ASSISTANT: Thank you for opting us, Take care of your health.