You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Sure, please help me with your name to check your reservation status.

USER: Sure, my name is Andrew Walker.

ASSISTANT: Sorry, no reservation found on your name.

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

ASSISTANT: Thank you for choosing us, have a nice day.