You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Patrick Turner here. I would like to cancel my reservation due to some health issues, can you please help me with that?

ASSISTANT: Sure, I am here to do that. Please be on hold.

USER: Sure.

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

USER: That's ok, no problem. Thank you for checking out.

ASSISTANT: Thank you for choosing us.