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

ASSISTANT: Hello. How can I help you?

USER: I want to cancel my recent reservation, due to health issue. Can you help me in my cancellation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please stand by.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry to inform no reservation found on your name.

USER: Not an issue. Thank you for your kind response.

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